#02182C
Closest named color: Rich Black (#0D1B2A). oklch(20.3% 0.05 247.7), rgb(2, 24, 44).
Aa
White text reads best on this color (17.95:1).
About this color
#02182C is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.050 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.020 away. White text reads best on it, at 17.95:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.95:1 |
Values
| HEX | #02182C |
| RGB | rgb(2, 24, 44) |
| HSL | hsl(209, 91%, 9%) |
| OKLCH | oklch(20.3% 0.05 247.7) |
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 #02182C | 17.95:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #02182C | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #02182C text on white | 17.95:1 | AAA | Lc 104.5 | Preferred for body text |
| #02182C text on black | 1.16:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E5
oklch(80.9% 0.058 247)
-
Step 400
400
#70A6D9
oklch(70.8% 0.094 247.9)
-
Step 500
500
#478FCE
oklch(63.2% 0.12 247.4)
-
Step 600
600
#2478BB
oklch(55.7% 0.13 247.4)
-
Step 700
700
#1464A1
oklch(49% 0.121 247.6)
-
Step 800
800
#155283
oklch(42.7% 0.101 247.8)
-
Step 900
900
#1A4469
oklch(37.6% 0.079 248.2)
-
Step 950
950 (this color)
#02182C
oklch(20.3% 0.05 247.7)
#02182C 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) | #0E192D | 0.017 |
| Deuteranopia (no green cones) | #08152C | 0.012 |
| Tritanopia (no blue cones) | #001D1F | 0.037 |
| Achromatopsia (no color) | #171717 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02182C
#02182C
oklch(20.3% 0.05 247.7)
- #241200
#241200
oklch(20.3% 0.045 67.2)
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 #02182C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.020
- Rich Navy #001219 ΔE 0.043
- Navy Blue #001146 ΔE 0.056
- Dark #1B2431 ΔE 0.059
- Dark Navy #000435 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.067
- Almost Black #070D0D ΔE 0.068
- Jet #212529 ΔE 0.071
Use #02182C 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.