#021B41
Closest named color: Navy Blue (#001146). oklch(23% 0.079 258), rgb(2, 27, 65).
Aa
White text reads best on this color (16.99:1).
About this color
#021B41 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.079 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.031 away. White text reads best on it, at 16.99:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.23:1 |
| White text | 16.99:1 |
Values
| HEX | #021B41 |
| RGB | rgb(2, 27, 65) |
| HSL | hsl(216, 94%, 13%) |
| OKLCH | oklch(23% 0.079 258) |
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 #021B41 | 16.99:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #021B41 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #021B41 text on white | 16.99:1 | AAA | Lc 103.6 | Preferred for body text |
| #021B41 text on black | 1.23:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFC
oklch(88.5% 0.052 257.4)
-
Step 300
300
#9BC3FD
oklch(81% 0.093 257.6)
-
Step 400
400
#62A1FD
oklch(70.8% 0.15 257.8)
-
Step 500
500
#3386FA
oklch(63.2% 0.191 257.8)
-
Step 600
600
#006CE8
oklch(55.6% 0.205 258)
-
Step 700
700
#005AC5
oklch(49.1% 0.183 258.1)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900
#0D3F82
oklch(37.8% 0.124 257.8)
-
Step 950
950 (this color)
#021B41
oklch(23% 0.079 258)
#021B41 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) | #031F42 | 0.013 |
| Deuteranopia (no green cones) | #001A40 | 0.005 |
| Tritanopia (no blue cones) | #00242A | 0.060 |
| Achromatopsia (no color) | #1C1C1C | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021B41
#021B41
oklch(23% 0.079 258)
- #291A00
#291A00
oklch(23.1% 0.048 79.3)
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 #021B41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.031
- Rich Black #0D1B2A ΔE 0.046
- Oxford Blue #1B263B ΔE 0.054
- Dark #1B2431 ΔE 0.058
- Night Blue #040348 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.064
- Dark Navy #000435 ΔE 0.073
- Darkblue #030764 ΔE 0.073
Use #021B41 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.