#25576E
Closest named color: Petrol (#005F6A). oklch(43.3% 0.065 230.9), rgb(37, 87, 110).
Aa
White text reads best on this color (7.87:1).
About this color
#25576E is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.065 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.032 away. White text reads best on it, at 7.87:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #25576E |
| RGB | rgb(37, 87, 110) |
| HSL | hsl(199, 50%, 29%) |
| OKLCH | oklch(43.3% 0.065 230.9) |
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 #25576E | 7.87:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #25576E | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #25576E text on white | 7.87:1 | AAA | Lc 87.1 | Fine for body text |
| #25576E text on black | 2.66:1 | Fails | Lc -15.0 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C6D5
oklch(81% 0.038 230.3)
-
Step 400
400
#79A8C0
oklch(70.7% 0.061 230.9)
-
Step 500
500
#5592B0
oklch(63% 0.078 231.1)
-
Step 600
600
#377C9C
oklch(55.6% 0.085 231.1)
-
Step 700
700
#286985
oklch(49.2% 0.079 229.9)
-
Step 800
800 (this color)
#25576E
oklch(43.3% 0.065 230.9)
-
Step 900
900
#224758
oklch(37.8% 0.051 230)
-
Step 950
950
#152933
oklch(26.9% 0.032 231.4)
#25576E 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) | #4B566F | 0.044 |
| Deuteranopia (no green cones) | #414E6E | 0.039 |
| Tritanopia (no blue cones) | #005D5F | 0.041 |
| Achromatopsia (no color) | #525252 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25576E
#25576E
oklch(43.3% 0.065 230.9)
- #6D462E
#6D462E
oklch(43.3% 0.065 51.9)
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 #25576E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.032
- YInMn Blue #415A77 ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.041
- Deep Teal #00555A ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.045
- Light Navy #155084 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.055
Use #25576E 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.