Slumber
Also known as: Boat Blue, Galaxy Blue, St. Tropez, Overtake
Slumber brings a cool and professional feel to any palette. This rich blue is a natural fit for corporate branding and SaaS products. Set it against a brown accent when you want the combination to pop. Accessibility-wise, it clears AA for text on white at 8.14:1.
Slumber color codes
- HEX
- #2D517C
- RGB
- rgb(45, 81, 124)
- RGBA
- rgba(45, 81, 124, 1)
- HSL
- hsl(213, 47%, 33%)
- HSV
- hsv(213, 64%, 49%)
- CMYK
- cmyk(64%, 35%, 0%, 51%)
- LAB
- lab(33.4 -2.2 -28.8)
- OKLCH
- oklch(42.9% 0.083 253.9)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
cool
Nearest standard colors
- CSS: darkslateblue#483D8B · ΔE 11.6
- RAL 5017 — Traffic blue#0E518D · ΔE 3.3 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck — Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where Slumber works
- Web & UI: Dark enough for body text and icons on white backgrounds — it passes WCAG AA as-is.
- Interiors: Strong for a whole room, excellent in doses: an accent wall, cabinetry, or a statement chair.
- Fashion: Wears best as the statement piece — a top, scarf, or shoes — against neutral basics.
- Branding: Sits in the trust register — a natural primary for finance, health, and B2B brands.
- Web & UI: A supporting-cast color for UI: chart fills, tags, empty-state illustrations — not text.
- Branding: A secondary brand color by nature: it supports a stronger primary and shines in illustration.
Copy as — every ecosystem
Tints, shades, and tones of Slumber
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Slumber by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Contrast & accessibility
Aa — on white
contrast 8.14:1
AA passAAA passAA large pass
Aa — on black
contrast 2.58:1
AA failAAA failAA large fail
Best text color on a Slumber background: #ffffff
Palettes featuring Slumber
Slumber with its complement
Soft neighbors of Slumber
Slumber triad
Similar colors
- Assassin#2D4F83 · ΔE 1.8
- Night Mode#234E86 · ΔE 2.0
- Nautical#2E4A7D · ΔE 3.2
- Dragonfly#314A76 · ΔE 3.3
- Naval Blue#384B6B · ΔE 4.6
- Dark Blue#315B7D · ΔE 4.6
Looking for maximum contrast instead? The complement of Slumber is closest to Pineapple.
Slumber FAQs
What color is Slumber?
Slumber is a dark blue with the hex code #2D517C. In HSL terms it has a hue of 213°, 47% saturation, and 33% lightness.
What is the hex code for Slumber?
The hex code for Slumber is #2D517C. In RGB it's rgb(45, 81, 124), and in CMYK it's cmyk(64%, 35%, 0%, 51%).
What colors go well with Slumber?
Slumber pairs naturally with brown tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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