#02151A
Closest named color: Rich Navy (#001219). oklch(18.2% 0.029 216), rgb(2, 21, 26).
Aa
White text reads best on this color (18.67:1).
About this color
#02151A is a very dark close to neutral grey. In OKLCH its lightness is 18%, its chroma 0.029. 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 18.67:1.
| Hue family | Neutrals |
| Lightness | very dark (18%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.12:1 |
| White text | 18.67:1 |
Values
| HEX | #02151A |
| RGB | rgb(2, 21, 26) |
| HSL | hsl(193, 86%, 5%) |
| OKLCH | oklch(18.2% 0.029 216) |
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 #02151A | 18.67:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #02151A | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #02151A text on white | 18.67:1 | AAA | Lc 105.1 | Preferred for body text |
| #02151A 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CCDDE1
oklch(88.6% 0.019 213.4)
-
Step 300
300
#A9C7CF
oklch(81% 0.034 215.6)
-
Step 400
400
#79AAB6
oklch(70.8% 0.055 214.6)
-
Step 500
500
#5594A4
oklch(63% 0.069 216)
-
Step 600
600
#377E90
oklch(55.5% 0.076 217)
-
Step 700
700
#286B7A
oklch(49.2% 0.07 215.2)
-
Step 800
800
#235763
oklch(42.7% 0.058 215.3)
-
Step 900
900
#224851
oklch(37.8% 0.046 215.1)
-
Step 950
950 (this color)
#02151A
oklch(18.2% 0.029 216)
#02151A 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) | #12141A | 0.026 |
| Deuteranopia (no green cones) | #0E111A | 0.024 |
| Tritanopia (no blue cones) | #001717 | 0.012 |
| Achromatopsia (no color) | #121212 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02151A
#02151A
oklch(18.2% 0.029 216)
- #1D0D09
#1D0D09
oklch(18.2% 0.029 35)
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 #02151A, 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 0.035
- Rich Black #0D1B2A ΔE 0.042
- Dark #1B2431 ΔE 0.079
- Dark Navy #000435 ΔE 0.082
- Dark Navy Blue #00022E ΔE 0.083
- Jet #212529 ΔE 0.083
- Midnight #03012D ΔE 0.085
Use #02151A 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.