#05151D
Closest named color: Rich Navy (#001219). oklch(18.6% 0.028 231.3), rgb(5, 21, 29).
Aa
White text reads best on this color (18.56:1).
About this color
#05151D is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.018 away. White text reads best on it, at 18.56:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.13:1 |
| White text | 18.56:1 |
Values
| HEX | #05151D |
| RGB | rgb(5, 21, 29) |
| HSL | hsl(200, 71%, 7%) |
| OKLCH | oklch(18.6% 0.028 231.3) |
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 #05151D | 18.56:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #05151D | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #05151D text on white | 18.56:1 | AAA | Lc 105.1 | Preferred for body text |
| #05151D text on black | 1.13:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ACC5D2
oklch(80.9% 0.033 230.4)
-
Step 400
400
#7FA7BC
oklch(70.7% 0.053 231.3)
-
Step 500
500
#5E91AB
oklch(63.1% 0.067 231.4)
-
Step 600
600
#437B97
oklch(55.6% 0.073 231.9)
-
Step 700
700
#346881
oklch(49.2% 0.068 231.3)
-
Step 800
800
#2C5568
oklch(42.8% 0.056 230)
-
Step 900
900
#284655
oklch(37.7% 0.044 231.3)
-
Step 950
950 (this color)
#05151D
oklch(18.6% 0.028 231.3)
#05151D 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) | #11151D | 0.019 |
| Deuteranopia (no green cones) | #0E121D | 0.017 |
| Tritanopia (no blue cones) | #001718 | 0.017 |
| Achromatopsia (no color) | #131313 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05151D
#05151D
oklch(18.6% 0.028 231.3)
- #1D0F07
#1D0F07
oklch(18.6% 0.029 50.9)
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 #05151D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.018
- Rich Black #0D1B2A ΔE 0.035
- Almost Black #070D0D ΔE 0.039
- Dark #1B2431 ΔE 0.073
- Dark Navy #000435 ΔE 0.078
- Jet #212529 ΔE 0.079
- Dark Navy Blue #00022E ΔE 0.080
- Midnight #03012D ΔE 0.081
Use #05151D 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.