#04282A
Closest named color: Dark (#1B2431). oklch(25.3% 0.04 200.4), rgb(4, 40, 42).
Aa
White text reads best on this color (15.64:1).
About this color
#04282A is a dark, muted teal or cyan. In OKLCH its lightness is 25%, its chroma 0.040 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.034 away. White text reads best on it, at 15.64:1.
| Hue family | Teals and cyans |
| Lightness | dark (25%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.34:1 |
| White text | 15.64:1 |
Values
| HEX | #04282A |
| RGB | rgb(4, 40, 42) |
| HSL | hsl(183, 83%, 9%) |
| OKLCH | oklch(25.3% 0.04 200.4) |
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 #04282A | 15.64:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #04282A | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #04282A text on white | 15.64:1 | AAA | Lc 102.4 | Preferred for body text |
| #04282A 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDED
oklch(93.6% 0.014 196.9)
-
Step 200
200
#C6DFE0
oklch(88.6% 0.027 199.6)
-
Step 300
300
#9ECACD
oklch(80.9% 0.046 201.5)
-
Step 400
400
#64AFB3
oklch(70.7% 0.075 200.1)
-
Step 500
500
#2C9BA1
oklch(63.2% 0.096 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#044B4F
oklch(37.6% 0.062 201.1)
-
Step 950
950 (this color)
#04282A
oklch(25.3% 0.04 200.4)
#04282A 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) | #24262A | 0.040 |
| Deuteranopia (no green cones) | #1F222A | 0.037 |
| Tritanopia (no blue cones) | #002A29 | 0.009 |
| Achromatopsia (no color) | #232323 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04282A
#04282A
oklch(25.3% 0.04 200.4)
- #331A1A
#331A1A
oklch(25.2% 0.04 20.3)
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 #04282A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.034
- Jet #212529 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.045
- Rich Black #0D1B2A ΔE 0.048
- Dark Forest Green #002D04 ΔE 0.070
- Very Dark Green #062E03 ΔE 0.071
- Space Cadet #2B2D42 ΔE 0.072
- Gunmetal #293241 ΔE 0.072
Use #04282A 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.