#00282B
Closest named color: Dark (#1B2431). oklch(25.2% 0.043 202.4), rgb(0, 40, 43).
Aa
White text reads best on this color (15.69:1).
About this color
#00282B is a dark, muted teal or cyan. In OKLCH its lightness is 25%, its chroma 0.043 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.036 away. White text reads best on it, at 15.69:1.
| Hue family | Teals and cyans |
| Lightness | dark (25%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.69:1 |
Values
| HEX | #00282B |
| RGB | rgb(0, 40, 43) |
| HSL | hsl(184, 100%, 8%) |
| OKLCH | oklch(25.2% 0.043 202.4) |
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 #00282B | 15.69:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #00282B | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #00282B text on white | 15.69:1 | AAA | Lc 102.4 | Preferred for body text |
| #00282B text on black | 1.33:1 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C5DFE1
oklch(88.5% 0.028 202.3)
-
Step 300
300
#9ACBCF
oklch(80.9% 0.051 202.4)
-
Step 400
400
#5DB0B7
oklch(70.8% 0.081 202.7)
-
Step 500
500
#159CA5
oklch(63.2% 0.104 202.3)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950 (this color)
#00282B
oklch(25.2% 0.043 202.4)
#00282B 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) | #24262B | 0.043 |
| Deuteranopia (no green cones) | #1E212B | 0.041 |
| Tritanopia (no blue cones) | #002A29 | 0.010 |
| Achromatopsia (no color) | #232323 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00282B
#00282B
oklch(25.2% 0.043 202.4)
- #341918
#341918
oklch(25.1% 0.043 22.9)
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 #00282B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.046
- Rich Black #0D1B2A ΔE 0.048
- Dark Forest Green #002D04 ΔE 0.071
- Very Dark Green #062E03 ΔE 0.073
- Space Cadet #2B2D42 ΔE 0.073
- Gunmetal #293241 ΔE 0.073
Use #00282B 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.