#02182F
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.054 250.8), rgb(2, 24, 47).
Aa
White text reads best on this color (17.88:1).
About this color
#02182F is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.054 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 17.88:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.88:1 |
Values
| HEX | #02182F |
| RGB | rgb(2, 24, 47) |
| HSL | hsl(211, 92%, 10%) |
| OKLCH | oklch(20.6% 0.054 250.8) |
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 #02182F | 17.88:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #02182F | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #02182F text on white | 17.88:1 | AAA | Lc 104.5 | Preferred for body text |
| #02182F 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
#C8DBF1
oklch(88.4% 0.037 252.1)
-
Step 300
300
#A2C4E9
oklch(80.8% 0.064 250.8)
-
Step 400
400
#6EA5DF
oklch(70.7% 0.103 250.7)
-
Step 500
500
#458DD6
oklch(63.1% 0.132 251)
-
Step 600
600
#2176C3
oklch(55.6% 0.143 250.6)
-
Step 700
700
#1263A9
oklch(49.2% 0.133 250.7)
-
Step 800
800
#145189
oklch(42.8% 0.11 250.9)
-
Step 900
900
#19436D
oklch(37.6% 0.086 251.2)
-
Step 950
950 (this color)
#02182F
oklch(20.6% 0.054 250.8)
#02182F 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) | #0D1A30 | 0.017 |
| Deuteranopia (no green cones) | #05152F | 0.011 |
| Tritanopia (no blue cones) | #001E21 | 0.040 |
| Achromatopsia (no color) | #171717 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02182F
#02182F
oklch(20.6% 0.054 250.8)
- #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 #02182F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Rich Navy #001219 ΔE 0.048
- Navy Blue #001146 ΔE 0.050
- Dark #1B2431 ΔE 0.059
- Dark Navy #000435 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
- Night Blue #040348 ΔE 0.071
- Jet #212529 ΔE 0.072
Use #02182F 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.