#081531
Closest named color: Rich Black (#0D1B2A). oklch(20.3% 0.059 263.2), rgb(8, 21, 49).
Aa
White text reads best on this color (18.07:1).
About this color
#081531 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.059 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 18.07:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.07:1 |
Values
| HEX | #081531 |
| RGB | rgb(8, 21, 49) |
| HSL | hsl(221, 72%, 11%) |
| OKLCH | oklch(20.3% 0.059 263.2) |
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 #081531 | 18.07:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #081531 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #081531 text on white | 18.07:1 | AAA | Lc 104.6 | Preferred for body text |
| #081531 text on black | 1.16:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#A9C1EE
oklch(80.8% 0.069 262.9)
-
Step 400
400
#7CA0E6
oklch(70.8% 0.111 263)
-
Step 500
500
#5B86DF
oklch(63% 0.143 263.4)
-
Step 600
600
#416ECD
oklch(55.6% 0.155 263.2)
-
Step 700
700
#335CB1
oklch(49.2% 0.143 262.9)
-
Step 800
800
#2B4B8F
oklch(42.6% 0.119 263.3)
-
Step 900
900
#273F72
oklch(37.6% 0.092 263.6)
-
Step 950
950 (this color)
#081531
oklch(20.3% 0.059 263.2)
#081531 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) | #061832 | 0.010 |
| Deuteranopia (no green cones) | #011430 | 0.012 |
| Tritanopia (no blue cones) | #001C20 | 0.049 |
| Achromatopsia (no color) | #161616 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #081531
#081531
oklch(20.3% 0.059 263.2)
- #201500
#201500
oklch(20.5% 0.042 83.9)
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 #081531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Navy Blue #001146 ΔE 0.044
- Rich Navy #001219 ΔE 0.053
- Dark Navy #000435 ΔE 0.057
- Night Blue #040348 ΔE 0.063
- Dark #1B2431 ΔE 0.063
- Dark Navy Blue #00022E ΔE 0.068
- Very Dark Blue #000133 ΔE 0.068
Use #081531 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.