#02182E
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.053 249.8), rgb(2, 24, 46).
Aa
White text reads best on this color (17.90:1).
About this color
#02182E is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.053 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 17.90:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.90:1 |
Values
| HEX | #02182E |
| RGB | rgb(2, 24, 46) |
| HSL | hsl(210, 92%, 9%) |
| OKLCH | oklch(20.5% 0.053 249.8) |
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 #02182E | 17.90:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #02182E | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #02182E text on white | 17.90:1 | AAA | Lc 104.5 | Preferred for body text |
| #02182E text on black | 1.17:1 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A2C4E8
oklch(80.8% 0.063 250.1)
-
Step 400
400
#6FA5DD
oklch(70.7% 0.1 250.3)
-
Step 500
500
#468ED3
oklch(63.2% 0.127 249.7)
-
Step 600
600
#2276C1
oklch(55.5% 0.14 250.2)
-
Step 700
700
#1363A6
oklch(49.1% 0.129 249.9)
-
Step 800
800
#145187
oklch(42.7% 0.108 250.1)
-
Step 900
900
#19446C
oklch(37.8% 0.083 249.6)
-
Step 950
950 (this color)
#02182E
oklch(20.5% 0.053 249.8)
#02182E 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) | #0D192F | 0.016 |
| Deuteranopia (no green cones) | #06152E | 0.011 |
| Tritanopia (no blue cones) | #001D20 | 0.038 |
| Achromatopsia (no color) | #171717 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02182E
#02182E
oklch(20.5% 0.053 249.8)
- #241300
#241300
oklch(20.6% 0.045 69.9)
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 #02182E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Rich Navy #001219 ΔE 0.046
- Navy Blue #001146 ΔE 0.052
- Dark #1B2431 ΔE 0.059
- Dark Navy #000435 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.066
- Almost Black #070D0D ΔE 0.071
- Jet #212529 ΔE 0.072
Use #02182E 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.