#03100B
Closest named color: Almost Black (#070D0D). oklch(15.8% 0.024 169.2), rgb(3, 16, 11).
Aa
White text reads best on this color (19.39:1).
About this color
#03100B is a very dark close to neutral grey. In OKLCH its lightness is 16%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.016 away. White text reads best on it, at 19.39:1.
| Hue family | Neutrals |
| Lightness | very dark (16%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.08:1 |
| White text | 19.39:1 |
Values
| HEX | #03100B |
| RGB | rgb(3, 16, 11) |
| HSL | hsl(157, 68%, 4%) |
| OKLCH | oklch(15.8% 0.024 169.2) |
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 #03100B | 19.39:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #03100B | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #03100B text on white | 19.39:1 | AAA | Lc 105.6 | Preferred for body text |
| #03100B text on black | 1.08:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE9
oklch(93.7% 0.008 168.7)
-
Step 200
200
#D0DDD7
oklch(88.6% 0.016 166.7)
-
Step 300
300
#B0C7BD
oklch(80.9% 0.029 167.6)
-
Step 400
400
#85AA9C
oklch(70.7% 0.045 169.9)
-
Step 500
500
#669584
oklch(63.1% 0.057 169.9)
-
Step 600
600
#4C7F6D
oklch(55.5% 0.062 169.5)
-
Step 700
700
#3D6C5B
oklch(49.2% 0.059 168.6)
-
Step 800
800
#33584A
oklch(42.8% 0.049 167.9)
-
Step 900
900
#2D483E
oklch(37.7% 0.037 169)
-
Step 950
950 (this color)
#03100B
oklch(15.8% 0.024 169.2)
#03100B 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) | #0F0E0B | 0.024 |
| Deuteranopia (no green cones) | #0D0D0B | 0.022 |
| Tritanopia (no blue cones) | #00100F | 0.010 |
| Achromatopsia (no color) | #0D0D0D | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03100B
#03100B
oklch(15.8% 0.024 169.2)
- #14080E
#14080E
oklch(15.6% 0.024 348.6)
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 #03100B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.016
- Rich Navy #001219 ΔE 0.028
- Rich Black #0D1B2A ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.073
- Dark Navy Blue #00022E ΔE 0.096
- Midnight #03012D ΔE 0.097
- Dark Navy #000435 ΔE 0.100
- Very Dark Blue #000133 ΔE 0.104
Use #03100B 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.