#02181C
Closest named color: Rich Navy (#001219). oklch(19.3% 0.03 210.5), rgb(2, 24, 28).
Aa
White text reads best on this color (18.26:1).
About this color
#02181C is a very dark, muted teal or cyan. In OKLCH its lightness is 19%, its chroma 0.030 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.025 away. White text reads best on it, at 18.26:1.
| Hue family | Teals and cyans |
| Lightness | very dark (19%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.26:1 |
Values
| HEX | #02181C |
| RGB | rgb(2, 24, 28) |
| HSL | hsl(189, 87%, 6%) |
| OKLCH | oklch(19.3% 0.03 210.5) |
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 #02181C | 18.26:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #02181C | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #02181C text on white | 18.26:1 | AAA | Lc 104.8 | Preferred for body text |
| #02181C text on black | 1.15:1 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CE
oklch(80.8% 0.036 212.4)
-
Step 400
400
#76ABB5
oklch(70.8% 0.058 210.6)
-
Step 500
500
#4F96A2
oklch(63.2% 0.073 209.7)
-
Step 600
600
#2E808D
oklch(55.6% 0.08 209.8)
-
Step 700
700
#1F6C78
oklch(49.1% 0.074 210)
-
Step 800
800
#1D5862
oklch(42.7% 0.062 210.8)
-
Step 900
900
#1F4850
oklch(37.6% 0.048 212.1)
-
Step 950
950 (this color)
#02181C
oklch(19.3% 0.03 210.5)
#02181C 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) | #15171C | 0.029 |
| Deuteranopia (no green cones) | #11141C | 0.026 |
| Tritanopia (no blue cones) | #001A19 | 0.012 |
| Achromatopsia (no color) | #151515 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02181C
#02181C
oklch(19.3% 0.03 210.5)
- #200F0C
#200F0C
oklch(19.2% 0.03 30.8)
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 #02181C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.025
- Rich Black #0D1B2A ΔE 0.034
- Almost Black #070D0D ΔE 0.045
- Dark #1B2431 ΔE 0.069
- Jet #212529 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.083
- Dark Navy #000435 ΔE 0.088
- Navy Blue #001146 ΔE 0.089
Use #02181C 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.