#021F30
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.048 238.4), rgb(2, 31, 48).
Aa
White text reads best on this color (16.91:1).
About this color
#021F30 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.048 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.018 away. White text reads best on it, at 16.91:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.91:1 |
Values
| HEX | #021F30 |
| RGB | rgb(2, 31, 48) |
| HSL | hsl(202, 92%, 10%) |
| OKLCH | oklch(22.8% 0.048 238.4) |
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 #021F30 | 16.91:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #021F30 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #021F30 text on white | 16.91:1 | AAA | Lc 103.6 | Preferred for body text |
| #021F30 text on black | 1.24:1 | 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
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#9FC7E1
oklch(81% 0.056 236.9)
-
Step 400
400
#68A9D3
oklch(70.8% 0.091 238.2)
-
Step 500
500
#3892C7
oklch(63% 0.116 238.6)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#0F4665
oklch(37.6% 0.076 239.1)
-
Step 950
950 (this color)
#021F30
oklch(22.8% 0.048 238.4)
#021F30 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) | #171F31 | 0.026 |
| Deuteranopia (no green cones) | #101B30 | 0.020 |
| Tritanopia (no blue cones) | #002325 | 0.030 |
| Achromatopsia (no color) | #1D1D1D | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021F30
#021F30
oklch(22.8% 0.048 238.4)
- #2D1603
#2D1603
oklch(22.9% 0.049 58.5)
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 #021F30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.018
- Dark #1B2431 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.046
- Jet #212529 ΔE 0.052
- Rich Navy #001219 ΔE 0.062
- Navy Blue #001146 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.083
- Almost Black #070D0D ΔE 0.086
Use #021F30 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.