#00281F
Closest named color: Jet (#212529). oklch(24.7% 0.047 173.7), rgb(0, 40, 31).
Aa
White text reads best on this color (15.86:1).
About this color
#00281F is a very dark, muted teal or cyan. In OKLCH its lightness is 25%, its chroma 0.047 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.048 away. White text reads best on it, at 15.86:1.
| Hue family | Teals and cyans |
| Lightness | very dark (25%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.32:1 |
| White text | 15.86:1 |
Values
| HEX | #00281F |
| RGB | rgb(0, 40, 31) |
| HSL | hsl(167, 100%, 8%) |
| OKLCH | oklch(24.7% 0.047 173.7) |
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 #00281F | 15.86:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #00281F | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #00281F text on white | 15.86:1 | AAA | Lc 102.6 | Preferred for body text |
| #00281F text on black | 1.32:1 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E0EEE9
oklch(93.7% 0.016 172.6)
-
Step 200
200
#C5E0D7
oklch(88.4% 0.031 173.5)
-
Step 300
300
#9CCDBE
oklch(81% 0.055 174.1)
-
Step 400
400
#5FB39C
oklch(70.7% 0.09 173.7)
-
Step 500
500
#1D9F84
oklch(63% 0.113 174.1)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950 (this color)
#00281F
oklch(24.7% 0.047 173.7)
#00281F 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) | #26241F | 0.049 |
| Deuteranopia (no green cones) | #212120 | 0.046 |
| Tritanopia (no blue cones) | #002925 | 0.011 |
| Achromatopsia (no color) | #222222 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00281F
#00281F
oklch(24.7% 0.047 173.7)
- #321723
#321723
oklch(24.8% 0.047 353)
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 #00281F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.048
- Dark Forest Green #002D04 ΔE 0.049
- Very Dark Green #062E03 ΔE 0.052
- Dark #1B2431 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.060
- Oxford Blue #1B263B ΔE 0.067
- Pakistan Green #283618 ΔE 0.075
- Dark Brown #341C02 ΔE 0.083
Use #00281F 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.