#031A23
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.035 226.4), rgb(3, 26, 35).
Aa
White text reads best on this color (17.85:1).
About this color
#031A23 is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.035 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.020 away. White text reads best on it, at 17.85:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.85:1 |
Values
| HEX | #031A23 |
| RGB | rgb(3, 26, 35) |
| HSL | hsl(197, 84%, 7%) |
| OKLCH | oklch(20.4% 0.035 226.4) |
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 #031A23 | 17.85:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #031A23 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #031A23 text on white | 17.85:1 | AAA | Lc 104.5 | Preferred for body text |
| #031A23 text on black | 1.17:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A6C7D5
oklch(81% 0.041 225.4)
-
Step 400
400
#74A9C0
oklch(70.6% 0.065 227)
-
Step 500
500
#4C94B0
oklch(63.1% 0.083 225.9)
-
Step 600
600
#2A7E9C
oklch(55.7% 0.091 226)
-
Step 700
700
#1B6A85
oklch(49.1% 0.084 226)
-
Step 800
800
#1A566C
oklch(42.6% 0.07 226.7)
-
Step 900
900
#1D4758
oklch(37.6% 0.055 227.5)
-
Step 950
950 (this color)
#031A23
oklch(20.4% 0.035 226.4)
#031A23 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) | #151923 | 0.025 |
| Deuteranopia (no green cones) | #111623 | 0.023 |
| Tritanopia (no blue cones) | #001D1D | 0.020 |
| Achromatopsia (no color) | #171717 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031A23
#031A23
oklch(20.4% 0.035 226.4)
- #241209
#241209
oklch(20.5% 0.034 46.9)
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 #031A23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.020
- Rich Navy #001219 ΔE 0.035
- Dark #1B2431 ΔE 0.057
- Almost Black #070D0D ΔE 0.058
- Jet #212529 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.070
- Navy Blue #001146 ΔE 0.077
- Dark Navy #000435 ΔE 0.084
Use #031A23 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.