#02101B
Closest named color: Rich Navy (#001219). oklch(16.6% 0.032 240.5), rgb(2, 16, 27).
Aa
White text reads best on this color (19.22:1).
About this color
#02101B is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.032 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.011 away. White text reads best on it, at 19.22:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.22:1 |
Values
| HEX | #02101B |
| RGB | rgb(2, 16, 27) |
| HSL | hsl(206, 86%, 6%) |
| OKLCH | oklch(16.6% 0.032 240.5) |
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 #02101B | 19.22:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #02101B | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #02101B text on white | 19.22:1 | AAA | Lc 105.5 | Preferred for body text |
| #02101B text on black | 1.09:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC4D7
oklch(80.8% 0.038 240.8)
-
Step 400
400
#7EA6C4
oklch(70.7% 0.062 241.1)
-
Step 500
500
#5C90B5
oklch(63.2% 0.079 240.6)
-
Step 600
600
#417AA0
oklch(55.7% 0.084 239.8)
-
Step 700
700
#326689
oklch(49% 0.079 240.5)
-
Step 800
800
#2A536F
oklch(42.5% 0.066 240.5)
-
Step 900
900
#27455A
oklch(37.7% 0.051 240.5)
-
Step 950
950 (this color)
#02101B
oklch(16.6% 0.032 240.5)
#02101B 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) | #0B101B | 0.017 |
| Deuteranopia (no green cones) | #070D1B | 0.014 |
| Tritanopia (no blue cones) | #001314 | 0.022 |
| Achromatopsia (no color) | #0F0F0F | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02101B
#02101B
oklch(16.6% 0.032 240.5)
- #180B02
#180B02
oklch(16.6% 0.031 61.8)
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 #02101B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.011
- Almost Black #070D0D ΔE 0.029
- Rich Black #0D1B2A ΔE 0.053
- Dark Navy Blue #00022E ΔE 0.066
- Midnight #03012D ΔE 0.066
- Dark Navy #000435 ΔE 0.067
- Very Dark Blue #000133 ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.085
Use #02101B 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.