#02151D
Closest named color: Rich Navy (#001219). oklch(18.3% 0.031 226.5), rgb(2, 21, 29).
Aa
White text reads best on this color (18.62:1).
About this color
#02151D is a very dark, muted teal or cyan. In OKLCH its lightness is 18%, its chroma 0.031 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.015 away. White text reads best on it, at 18.62:1.
| Hue family | Teals and cyans |
| Lightness | very dark (18%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.12:1 |
| White text | 18.62:1 |
Values
| HEX | #02151D |
| RGB | rgb(2, 21, 29) |
| HSL | hsl(198, 87%, 6%) |
| OKLCH | oklch(18.3% 0.031 226.5) |
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 #02151D | 18.62:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #02151D | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #02151D text on white | 18.62:1 | AAA | Lc 105.1 | Preferred for body text |
| #02151D 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A8C6D3
oklch(80.9% 0.037 225.9)
-
Step 400
400
#79A9BD
oklch(70.8% 0.059 225.7)
-
Step 500
500
#5493AD
oklch(63.1% 0.076 226.7)
-
Step 600
600
#357D99
oklch(55.6% 0.083 226.9)
-
Step 700
700
#276982
oklch(49% 0.077 226.7)
-
Step 800
800
#22566A
oklch(42.7% 0.064 226.6)
-
Step 900
900
#224756
oklch(37.7% 0.049 226.8)
-
Step 950
950 (this color)
#02151D
oklch(18.3% 0.031 226.5)
#02151D 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) | #11141D | 0.024 |
| Deuteranopia (no green cones) | #0D111D | 0.022 |
| Tritanopia (no blue cones) | #001718 | 0.015 |
| Achromatopsia (no color) | #131313 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02151D
#02151D
oklch(18.3% 0.031 226.5)
- #1E0E06
#1E0E06
oklch(18.5% 0.032 48.3)
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 #02151D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.015
- Rich Black #0D1B2A ΔE 0.037
- Almost Black #070D0D ΔE 0.039
- Dark #1B2431 ΔE 0.076
- Dark Navy #000435 ΔE 0.077
- Dark Navy Blue #00022E ΔE 0.079
- Midnight #03012D ΔE 0.080
- Jet #212529 ΔE 0.082
Use #02151D 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.