#02131D
Closest named color: Rich Navy (#001219). oklch(17.7% 0.033 234.4), rgb(2, 19, 29).
Aa
White text reads best on this color (18.85:1).
About this color
#02131D is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.033 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.010 away. White text reads best on it, at 18.85:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.85:1 |
Values
| HEX | #02131D |
| RGB | rgb(2, 19, 29) |
| HSL | hsl(202, 87%, 6%) |
| OKLCH | oklch(17.7% 0.033 234.4) |
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 #02131D | 18.85:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #02131D | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #02131D text on white | 18.85:1 | AAA | Lc 105.2 | Preferred for body text |
| #02131D text on black | 1.11:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C5D6
oklch(80.8% 0.039 234.6)
-
Step 400
400
#7AA7C2
oklch(70.6% 0.062 235.2)
-
Step 500
500
#5791B2
oklch(63% 0.079 234.9)
-
Step 600
600
#3A7B9E
oklch(55.5% 0.086 234.8)
-
Step 700
700
#2B6887
oklch(49.1% 0.08 233.9)
-
Step 800
800
#25556E
oklch(42.8% 0.066 234)
-
Step 900
900
#244659
oklch(37.7% 0.051 234.9)
-
Step 950
950 (this color)
#02131D
oklch(17.7% 0.033 234.4)
#02131D 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) | #0E131D | 0.020 |
| Deuteranopia (no green cones) | #0A101D | 0.017 |
| Tritanopia (no blue cones) | #001616 | 0.022 |
| Achromatopsia (no color) | #111111 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02131D
#02131D
oklch(17.7% 0.033 234.4)
- #1C0D04
#1C0D04
oklch(17.8% 0.032 54.3)
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 #02131D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.010
- Almost Black #070D0D ΔE 0.035
- Rich Black #0D1B2A ΔE 0.042
- Dark Navy #000435 ΔE 0.071
- Dark Navy Blue #00022E ΔE 0.072
- Midnight #03012D ΔE 0.073
- Very Dark Blue #000133 ΔE 0.077
- Dark #1B2431 ΔE 0.082
Use #02131D 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.