#021D35
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.057 248.4), rgb(2, 29, 53).
Aa
White text reads best on this color (17.07:1).
About this color
#021D35 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.057 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.023 away. White text reads best on it, at 17.07:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.07:1 |
Values
| HEX | #021D35 |
| RGB | rgb(2, 29, 53) |
| HSL | hsl(208, 93%, 11%) |
| OKLCH | oklch(22.5% 0.057 248.4) |
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 #021D35 | 17.07:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #021D35 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #021D35 text on white | 17.07:1 | AAA | Lc 103.7 | Preferred for body text |
| #021D35 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
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF2
oklch(88.5% 0.038 248.3)
-
Step 300
300
#9FC5EB
oklch(80.9% 0.068 248.7)
-
Step 400
400
#68A6E1
oklch(70.7% 0.108 248.4)
-
Step 500
500
#398ED9
oklch(63.1% 0.139 248.7)
-
Step 600
600
#0177C6
oklch(55.6% 0.15 248.2)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#10446F
oklch(37.7% 0.091 248.4)
-
Step 950
950 (this color)
#021D35
oklch(22.5% 0.057 248.4)
#021D35 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) | #111E36 | 0.019 |
| Deuteranopia (no green cones) | #091A35 | 0.012 |
| Tritanopia (no blue cones) | #002326 | 0.042 |
| Achromatopsia (no color) | #1C1C1C | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021D35
#021D35
oklch(22.5% 0.057 248.4)
- #2A1700
#2A1700
oklch(22.5% 0.049 70)
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 #021D35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.023
- Dark #1B2431 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.048
- Navy Blue #001146 ΔE 0.051
- Jet #212529 ΔE 0.060
- Rich Navy #001219 ΔE 0.065
- Night Blue #040348 ΔE 0.077
- Dark Navy #000435 ΔE 0.078
Use #021D35 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.