#031A2A
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.044 241.6), rgb(3, 26, 42).
Aa
White text reads best on this color (17.72:1).
About this color
#031A2A is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.044 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.014 away. White text reads best on it, at 17.72:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.72:1 |
Values
| HEX | #031A2A |
| RGB | rgb(3, 26, 42) |
| HSL | hsl(205, 87%, 9%) |
| OKLCH | oklch(20.9% 0.044 241.6) |
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 #031A2A | 17.72:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #031A2A | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #031A2A text on white | 17.72:1 | AAA | Lc 104.4 | Preferred for body text |
| #031A2A text on black | 1.18:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A4C5DF
oklch(80.8% 0.051 242)
-
Step 400
400
#71A7D0
oklch(70.6% 0.083 242.1)
-
Step 500
500
#4891C3
oklch(63.1% 0.105 241.1)
-
Step 600
600
#257AB0
oklch(55.6% 0.115 241.7)
-
Step 700
700
#166797
oklch(49.2% 0.106 241.2)
-
Step 800
800
#17547B
oklch(42.8% 0.088 241.8)
-
Step 900
900
#1B4663
oklch(37.8% 0.069 241.4)
-
Step 950
950 (this color)
#031A2A
oklch(20.9% 0.044 241.6)
#031A2A 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) | #121A2B | 0.020 |
| Deuteranopia (no green cones) | #0D172A | 0.016 |
| Tritanopia (no blue cones) | #001E20 | 0.029 |
| Achromatopsia (no color) | #181818 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031A2A
#031A2A
oklch(20.9% 0.044 241.6)
- #261302
#261302
oklch(21% 0.044 62.6)
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 #031A2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.014
- Rich Navy #001219 ΔE 0.043
- Dark #1B2431 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.062
- Jet #212529 ΔE 0.063
- Navy Blue #001146 ΔE 0.064
- Almost Black #070D0D ΔE 0.068
- Dark Navy #000435 ΔE 0.076
Use #031A2A 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.