#04252C
Closest named color: Dark (#1B2431). oklch(24.5% 0.039 214.9), rgb(4, 37, 44).
Aa
White text reads best on this color (16.07:1).
About this color
#04252C is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.039 and its hue 215°. 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 16.07:1.
| Hue family | Teals and cyans |
| Lightness | very dark (24%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.07:1 |
Values
| HEX | #04252C |
| RGB | rgb(4, 37, 44) |
| HSL | hsl(191, 83%, 9%) |
| OKLCH | oklch(24.5% 0.039 214.9) |
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 #04252C | 16.07:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #04252C | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #04252C text on white | 16.07:1 | AAA | Lc 102.8 | Preferred for body text |
| #04252C 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECEF
oklch(93.5% 0.013 214.4)
-
Step 200
200
#C7DEE4
oklch(88.5% 0.026 215.2)
-
Step 300
300
#9FC9D3
oklch(80.9% 0.046 213.9)
-
Step 400
400
#67ADBE
oklch(70.8% 0.075 215.1)
-
Step 500
500
#3498AD
oklch(63.1% 0.095 214.6)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#0B4A56
oklch(37.8% 0.062 214.3)
-
Step 950
950 (this color)
#04252C
oklch(24.5% 0.039 214.9)
#04252C 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) | #20232C | 0.035 |
| Deuteranopia (no green cones) | #1A1F2C | 0.032 |
| Tritanopia (no blue cones) | #002827 | 0.017 |
| Achromatopsia (no color) | #212121 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04252C
#04252C
oklch(24.5% 0.039 214.9)
- #311913
#311913
oklch(24.5% 0.04 34.9)
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 #04252C, 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
- Jet #212529 ΔE 0.036
- Oxford Blue #1B263B ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.073
- Gunmetal #293241 ΔE 0.076
- Rich Navy #001219 ΔE 0.076
- Dark Forest Green #002D04 ΔE 0.080
Use #04252C 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.