#04282F
Closest named color: Dark (#1B2431). oklch(25.6% 0.041 213.6), rgb(4, 40, 47).
Aa
White text reads best on this color (15.55:1).
About this color
#04282F is a dark, muted teal or cyan. In OKLCH its lightness is 26%, its chroma 0.041 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.029 away. White text reads best on it, at 15.55:1.
| Hue family | Teals and cyans |
| Lightness | dark (26%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.34:1 |
| White text | 15.55:1 |
Values
| HEX | #04282F |
| RGB | rgb(4, 40, 47) |
| HSL | hsl(190, 84%, 10%) |
| OKLCH | oklch(25.6% 0.041 213.6) |
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 #04282F | 15.55:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #04282F | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #04282F text on white | 15.55:1 | AAA | Lc 102.3 | Preferred for body text |
| #04282F text on black | 1.34:1 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDF0
oklch(93.7% 0.014 213.1)
-
Step 200
200
#C6DEE4
oklch(88.5% 0.027 214.4)
-
Step 300
300
#9DC9D4
oklch(80.8% 0.049 214.7)
-
Step 400
400
#62AEBE
oklch(70.8% 0.079 212.8)
-
Step 500
500
#2999AE
oklch(63.2% 0.1 213.4)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#024A56
oklch(37.6% 0.065 213.3)
-
Step 950
950 (this color)
#04282F
oklch(25.6% 0.041 213.6)
#04282F 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) | #23262F | 0.038 |
| Deuteranopia (no green cones) | #1D222F | 0.034 |
| Tritanopia (no blue cones) | #002B2A | 0.017 |
| Achromatopsia (no color) | #242424 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04282F
#04282F
oklch(25.6% 0.041 213.6)
- #341B16
#341B16
oklch(25.5% 0.041 32.1)
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 #04282F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.029
- Jet #212529 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.037
- Rich Black #0D1B2A ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.066
- Gunmetal #293241 ΔE 0.067
- Midnight Green #073B4C ΔE 0.076
- Dark Forest Green #002D04 ΔE 0.079
Use #04282F 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.