#02182A
Closest named color: Rich Black (#0D1B2A). oklch(20.2% 0.047 245.1), rgb(2, 24, 42).
Aa
White text reads best on this color (17.99:1).
About this color
#02182A is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.047 and its hue 245°. 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 17.99:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.99:1 |
Values
| HEX | #02182A |
| RGB | rgb(2, 24, 42) |
| HSL | hsl(207, 91%, 9%) |
| OKLCH | oklch(20.2% 0.047 245.1) |
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 #02182A | 17.99:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #02182A | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #02182A text on white | 17.99:1 | AAA | Lc 104.6 | Preferred for body text |
| #02182A 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A4C5E2
oklch(80.9% 0.054 245.1)
-
Step 400
400
#71A7D4
oklch(70.8% 0.087 244.6)
-
Step 500
500
#4890C9
oklch(63.2% 0.112 244.9)
-
Step 600
600
#2579B6
oklch(55.7% 0.123 245.1)
-
Step 700
700
#16659C
oklch(49% 0.114 245.2)
-
Step 800
800
#17537F
oklch(42.7% 0.094 245.3)
-
Step 900
900
#1A4566
oklch(37.7% 0.074 244.9)
-
Step 950
950 (this color)
#02182A
oklch(20.2% 0.047 245.1)
#02182A 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) | #0F192B | 0.019 |
| Deuteranopia (no green cones) | #09152A | 0.013 |
| Tritanopia (no blue cones) | #001C1F | 0.031 |
| Achromatopsia (no color) | #171717 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02182A
#02182A
oklch(20.2% 0.047 245.1)
- #241100
#241100
oklch(20.1% 0.045 64.5)
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 #02182A, 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 0.039
- Dark #1B2431 ΔE 0.059
- Navy Blue #001146 ΔE 0.060
- Almost Black #070D0D ΔE 0.064
- Dark Navy #000435 ΔE 0.068
- Oxford Blue #1B263B ΔE 0.069
- Jet #212529 ΔE 0.071
Use #02182A 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.