#05112B
Closest named color: Rich Black (#0D1B2A). oklch(18.4% 0.056 262.3), rgb(5, 17, 43).
Aa
White text reads best on this color (18.72:1).
About this color
#05112B is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.056 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 18.72:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.12:1 |
| White text | 18.72:1 |
Values
| HEX | #05112B |
| RGB | rgb(5, 17, 43) |
| HSL | hsl(221, 79%, 9%) |
| OKLCH | oklch(18.4% 0.056 262.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #05112B | 18.72:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #05112B | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #05112B text on white | 18.72:1 | AAA | Lc 105.1 | Preferred for body text |
| #05112B text on black | 1.12:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#AAC1EC
oklch(80.8% 0.066 262.8)
-
Step 400
400
#7DA0E3
oklch(70.7% 0.106 262.8)
-
Step 500
500
#5C87DB
oklch(63.1% 0.136 262.6)
-
Step 600
600
#426FC8
oklch(55.5% 0.147 262.4)
-
Step 700
700
#345DAD
oklch(49.2% 0.136 262.2)
-
Step 800
800
#2B4C8C
oklch(42.7% 0.113 262.2)
-
Step 900
900
#274070
oklch(37.7% 0.088 262.2)
-
Step 950
950 (this color)
#05112B
oklch(18.4% 0.056 262.3)
#05112B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #04142C | 0.010 |
| Deuteranopia (no green cones) | #00102A | 0.011 |
| Tritanopia (no blue cones) | #00171B | 0.045 |
| Achromatopsia (no color) | #121212 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05112B
#05112B
oklch(18.4% 0.056 262.3)
- #1B1100
#1B1100
oklch(18.6% 0.038 83.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #05112B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Rich Navy #001219 ΔE 0.041
- Dark Navy #000435 ΔE 0.047
- Navy Blue #001146 ΔE 0.053
- Dark Navy Blue #00022E ΔE 0.054
- Midnight #03012D ΔE 0.054
- Very Dark Blue #000133 ΔE 0.056
- Almost Black #070D0D ΔE 0.062
Use #05112B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.