#021B3A
Closest named color: Rich Black (#0D1B2A). oklch(22.4% 0.068 254.8), rgb(2, 27, 58).
Aa
White text reads best on this color (17.20:1).
About this color
#021B3A is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.068 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.033 away. White text reads best on it, at 17.20:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.20:1 |
Values
| HEX | #021B3A |
| RGB | rgb(2, 27, 58) |
| HSL | hsl(213, 93%, 12%) |
| OKLCH | oklch(22.4% 0.068 254.8) |
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 #021B3A | 17.20:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #021B3A | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #021B3A text on white | 17.20:1 | AAA | Lc 103.8 | Preferred for body text |
| #021B3A 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9EC4F4
oklch(81% 0.08 254.5)
-
Step 400
400
#66A3EF
oklch(70.6% 0.129 254.7)
-
Step 500
500
#398AEA
oklch(63.2% 0.164 254.8)
-
Step 600
600
#0771D8
oklch(55.5% 0.179 254.8)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#034D98
oklch(42.6% 0.139 255.1)
-
Step 900
900
#104179
oklch(37.7% 0.108 254.9)
-
Step 950
950 (this color)
#021B3A
oklch(22.4% 0.068 254.8)
#021B3A 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) | #0A1E3B | 0.015 |
| Deuteranopia (no green cones) | #001939 | 0.008 |
| Tritanopia (no blue cones) | #002327 | 0.052 |
| Achromatopsia (no color) | #1B1B1B | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021B3A
#021B3A
oklch(22.4% 0.068 254.8)
- #281800
#281800
oklch(22.5% 0.047 76)
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 #021B3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.033
- Navy Blue #001146 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.053
- Dark #1B2431 ΔE 0.053
- Night Blue #040348 ΔE 0.065
- Jet #212529 ΔE 0.070
- Rich Navy #001219 ΔE 0.071
- Dark Navy #000435 ΔE 0.071
Use #021B3A 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.