#0A252F
Closest named color: Dark (#1B2431). oklch(24.9% 0.037 225.8), rgb(10, 37, 47).
Aa
White text reads best on this color (15.92:1).
About this color
#0A252F is a very dark, muted teal or cyan. In OKLCH its lightness is 25%, its chroma 0.037 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.022 away. White text reads best on it, at 15.92:1.
| Hue family | Teals and cyans |
| Lightness | very dark (25%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.31:1 |
| White text | 15.92:1 |
Values
| HEX | #0A252F |
| RGB | rgb(10, 37, 47) |
| HSL | hsl(196, 65%, 11%) |
| OKLCH | oklch(24.9% 0.037 225.8) |
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 #0A252F | 15.92:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0A252F | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #0A252F text on white | 15.92:1 | AAA | Lc 102.8 | Preferred for body text |
| #0A252F text on black | 1.31:1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A3C7D7
oklch(80.9% 0.045 226.7)
-
Step 400
400
#6FAAC2
oklch(70.6% 0.071 225.6)
-
Step 500
500
#4495B3
oklch(63.2% 0.09 225.3)
-
Step 600
600
#1C7F9F
oklch(55.7% 0.098 225.4)
-
Step 700
700
#086B88
oklch(49.2% 0.091 225.4)
-
Step 800
800
#0F576E
oklch(42.7% 0.076 225.3)
-
Step 900
900
#174859
oklch(37.7% 0.059 224.8)
-
Step 950
950 (this color)
#0A252F
oklch(24.9% 0.037 225.8)
#0A252F 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) | #202430 | 0.029 |
| Deuteranopia (no green cones) | #1A202F | 0.025 |
| Tritanopia (no blue cones) | #002828 | 0.022 |
| Achromatopsia (no color) | #222222 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A252F
#0A252F
oklch(24.9% 0.037 225.8)
- #301B12
#301B12
oklch(24.8% 0.037 43.8)
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 #0A252F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.022
- Jet #212529 ΔE 0.032
- Oxford Blue #1B263B ΔE 0.033
- Rich Black #0D1B2A ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.065
- Gunmetal #293241 ΔE 0.070
- Rich Navy #001219 ΔE 0.080
- Midnight Green #073B4C ΔE 0.083
Use #0A252F 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.