#031534
Closest named color: Rich Black (#0D1B2A). oklch(20.2% 0.066 259.1), rgb(3, 21, 52).
Aa
White text reads best on this color (18.09:1).
About this color
#031534 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.066 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.09:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.09:1 |
Values
| HEX | #031534 |
| RGB | rgb(3, 21, 52) |
| HSL | hsl(218, 89%, 11%) |
| OKLCH | oklch(20.2% 0.066 259.1) |
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 #031534 | 18.09:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #031534 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #031534 text on white | 18.09:1 | AAA | Lc 104.6 | Preferred for body text |
| #031534 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DAF7
oklch(88.4% 0.045 259.9)
-
Step 300
300
#A2C2F4
oklch(80.8% 0.079 259.2)
-
Step 400
400
#70A1EE
oklch(70.7% 0.125 259.1)
-
Step 500
500
#4987E9
oklch(63% 0.161 259.2)
-
Step 600
600
#2A6FD7
oklch(55.6% 0.174 258.9)
-
Step 700
700
#1D5CBB
oklch(49.2% 0.163 259.1)
-
Step 800
800
#1A4C97
oklch(42.8% 0.134 258.8)
-
Step 900
900
#1C4078
oklch(37.7% 0.104 259.1)
-
Step 950
950 (this color)
#031534
oklch(20.2% 0.066 259.1)
#031534 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) | #031835 | 0.010 |
| Deuteranopia (no green cones) | #001433 | 0.007 |
| Tritanopia (no blue cones) | #001D22 | 0.051 |
| Achromatopsia (no color) | #161616 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031534
#031534
oklch(20.2% 0.066 259.1)
- #211400
#211400
oklch(20.3% 0.042 78.8)
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 #031534, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Navy Blue #001146 ΔE 0.037
- Dark Navy #000435 ΔE 0.052
- Rich Navy #001219 ΔE 0.056
- Night Blue #040348 ΔE 0.056
- Very Dark Blue #000133 ΔE 0.063
- Dark Navy Blue #00022E ΔE 0.064
- Midnight #03012D ΔE 0.066
Use #031534 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.