#002531
Closest named color: Dark (#1B2431). oklch(24.6% 0.046 224.4), rgb(0, 37, 49).
Aa
White text reads best on this color (16.04:1).
About this color
#002531 is a very dark, muted teal or cyan. In OKLCH its lightness is 25%, its chroma 0.046 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.030 away. White text reads best on it, at 16.04:1.
| Hue family | Teals and cyans |
| Lightness | very dark (25%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.04:1 |
Values
| HEX | #002531 |
| RGB | rgb(0, 37, 49) |
| HSL | hsl(195, 100%, 10%) |
| OKLCH | oklch(24.6% 0.046 224.4) |
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 #002531 | 16.04:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #002531 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #002531 text on white | 16.04:1 | AAA | Lc 102.7 | Preferred for body text |
| #002531 text on black | 1.30:1 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C5DEE8
oklch(88.5% 0.03 223.8)
-
Step 300
300
#9BC9DB
oklch(80.9% 0.055 223.9)
-
Step 400
400
#5EACC9
oklch(70.6% 0.088 224.5)
-
Step 500
500
#1E97BC
oklch(63.1% 0.112 224.7)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950 (this color)
#002531
oklch(24.6% 0.046 224.4)
#002531 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) | #1E2432 | 0.035 |
| Deuteranopia (no green cones) | #181F31 | 0.032 |
| Tritanopia (no blue cones) | #002929 | 0.025 |
| Achromatopsia (no color) | #212121 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #002531
#002531
oklch(24.6% 0.046 224.4)
- #33190D
#33190D
oklch(24.7% 0.047 44.8)
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 #002531, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.030
- Rich Black #0D1B2A ΔE 0.036
- Oxford Blue #1B263B ΔE 0.037
- Jet #212529 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.071
- Gunmetal #293241 ΔE 0.075
- Rich Navy #001219 ΔE 0.078
- Navy Blue #001146 ΔE 0.080
Use #002531 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.