#021D31
Closest named color: Rich Black (#0D1B2A). oklch(22.2% 0.051 244), rgb(2, 29, 49).
Aa
White text reads best on this color (17.17:1).
About this color
#021D31 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.051 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.017 away. White text reads best on it, at 17.17:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.17:1 |
Values
| HEX | #021D31 |
| RGB | rgb(2, 29, 49) |
| HSL | hsl(206, 92%, 10%) |
| OKLCH | oklch(22.2% 0.051 244) |
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 #021D31 | 17.17:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #021D31 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #021D31 text on white | 17.17:1 | AAA | Lc 103.9 | Preferred for body text |
| #021D31 text on black | 1.22:1 | 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
#E0EBF5
oklch(93.5% 0.018 245.4)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C6E6
oklch(81% 0.061 244)
-
Step 400
400
#69A7D9
oklch(70.6% 0.098 244.1)
-
Step 500
500
#3B90CF
oklch(63% 0.125 244.3)
-
Step 600
600
#0879BC
oklch(55.5% 0.136 244.3)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#035383
oklch(42.6% 0.104 244.2)
-
Step 900
900
#124569
oklch(37.6% 0.081 244.2)
-
Step 950
950 (this color)
#021D31
oklch(22.2% 0.051 244)
#021D31 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) | #131E32 | 0.022 |
| Deuteranopia (no green cones) | #0C1931 | 0.017 |
| Tritanopia (no blue cones) | #002224 | 0.036 |
| Achromatopsia (no color) | #1B1B1B | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021D31
#021D31
oklch(22.2% 0.051 244)
- #2B1500
#2B1500
oklch(22.2% 0.05 63.7)
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 #021D31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.017
- Dark #1B2431 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.050
- Navy Blue #001146 ΔE 0.057
- Jet #212529 ΔE 0.058
- Rich Navy #001219 ΔE 0.059
- Dark Navy #000435 ΔE 0.080
- Night Blue #040348 ΔE 0.082
Use #021D31 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.