#02100A
Closest named color: Almost Black (#070D0D). oklch(15.6% 0.027 167), rgb(2, 16, 10).
Aa
White text reads best on this color (19.42:1).
About this color
#02100A is a very dark close to neutral grey. In OKLCH its lightness is 16%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.019 away. White text reads best on it, at 19.42:1.
| Hue family | Neutrals |
| Lightness | very dark (16%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.08:1 |
| White text | 19.42:1 |
Values
| HEX | #02100A |
| RGB | rgb(2, 16, 10) |
| HSL | hsl(154, 78%, 4%) |
| OKLCH | oklch(15.6% 0.027 167) |
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 #02100A | 19.42:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #02100A | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #02100A text on white | 19.42:1 | AAA | Lc 105.6 | Preferred for body text |
| #02100A 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
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CFDDD7
oklch(88.5% 0.017 168.4)
-
Step 300
300
#AEC7BC
oklch(80.8% 0.031 167.2)
-
Step 400
400
#83AB9A
oklch(70.7% 0.05 167)
-
Step 500
500
#629681
oklch(63% 0.064 167)
-
Step 600
600
#47816B
oklch(55.7% 0.071 167.3)
-
Step 700
700
#386D59
oklch(49.2% 0.066 167.1)
-
Step 800
800
#2F5949
oklch(42.8% 0.055 167.2)
-
Step 900
900
#2B493D
oklch(37.8% 0.042 166.9)
-
Step 950
950 (this color)
#02100A
oklch(15.6% 0.027 167)
#02100A 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) | #0F0E0A | 0.026 |
| Deuteranopia (no green cones) | #0D0C0A | 0.026 |
| Tritanopia (no blue cones) | #00100E | 0.009 |
| Achromatopsia (no color) | #0D0D0D | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02100A
#02100A
oklch(15.6% 0.027 167)
- #15080F
#15080F
oklch(15.8% 0.027 346.8)
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 #02100A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.019
- Rich Navy #001219 ΔE 0.030
- Rich Black #0D1B2A ΔE 0.075
- Very Dark Brown #1D0200 ΔE 0.075
- Dark Navy Blue #00022E ΔE 0.098
- Midnight #03012D ΔE 0.099
- Dark Navy #000435 ΔE 0.102
- Very Dark Blue #000133 ΔE 0.105
Use #02100A 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.