#05131C
Closest named color: Rich Navy (#001219). oklch(17.9% 0.028 237.4), rgb(5, 19, 28).
Aa
White text reads best on this color (18.81:1).
About this color
#05131C is a very dark close to neutral grey. In OKLCH its lightness is 18%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.013 away. White text reads best on it, at 18.81:1.
| Hue family | Neutrals |
| Lightness | very dark (18%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.81:1 |
Values
| HEX | #05131C |
| RGB | rgb(5, 19, 28) |
| HSL | hsl(203, 70%, 6%) |
| OKLCH | oklch(17.9% 0.028 237.4) |
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 #05131C | 18.81:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #05131C | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #05131C text on white | 18.81:1 | AAA | Lc 105.2 | Preferred for body text |
| #05131C text on black | 1.11:1 | 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
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#AEC4D4
oklch(80.9% 0.033 239.5)
-
Step 400
400
#82A6BE
oklch(70.7% 0.053 237.7)
-
Step 500
500
#6290AD
oklch(63.1% 0.066 236.9)
-
Step 600
600
#477A99
oklch(55.7% 0.073 236.8)
-
Step 700
700
#396683
oklch(49.1% 0.068 238.5)
-
Step 800
800
#2F546A
oklch(42.8% 0.056 236.2)
-
Step 900
900
#2A4556
oklch(37.6% 0.044 237.2)
-
Step 950
950 (this color)
#05131C
oklch(17.9% 0.028 237.4)
#05131C 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) | #0F131C | 0.016 |
| Deuteranopia (no green cones) | #0C101C | 0.015 |
| Tritanopia (no blue cones) | #001516 | 0.019 |
| Achromatopsia (no color) | #111111 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05131C
#05131C
oklch(17.9% 0.028 237.4)
- #1A0E05
#1A0E05
oklch(17.8% 0.028 59.5)
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 #05131C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.013
- Almost Black #070D0D ΔE 0.034
- Rich Black #0D1B2A ΔE 0.041
- Dark Navy #000435 ΔE 0.074
- Dark Navy Blue #00022E ΔE 0.075
- Midnight #03012D ΔE 0.076
- Dark #1B2431 ΔE 0.080
- Very Dark Blue #000133 ΔE 0.081
Use #05131C 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.