#25506F
Closest named color: Deep Sea Blue (#015482). oklch(41.5% 0.071 242.4), rgb(37, 80, 111).
Aa
White text reads best on this color (8.55:1).
About this color
#25506F is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.071 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.034 away. White text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #25506F |
| RGB | rgb(37, 80, 111) |
| HSL | hsl(205, 50%, 29%) |
| OKLCH | oklch(41.5% 0.071 242.4) |
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 #25506F | 8.55:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #25506F | 2.45:1 | Fails | Lc 14.8 | Not readable |
| #25506F text on white | 8.55:1 | AAA | Lc 89.2 | Fine for body text |
| #25506F text on black | 2.45:1 | Fails | Lc -13.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC4DA
oklch(80.8% 0.042 243.8)
-
Step 400
400
#7CA6C7
oklch(70.7% 0.067 242.5)
-
Step 500
500
#5A90B8
oklch(63.2% 0.083 241.8)
-
Step 600
600
#3E79A5
oklch(55.6% 0.092 243.1)
-
Step 700
700
#2F668D
oklch(49.1% 0.085 242.2)
-
Step 800
800 (this color)
#25506F
oklch(41.5% 0.071 242.4)
-
Step 900
900
#26455C
oklch(37.7% 0.054 242.2)
-
Step 950
950
#172836
oklch(26.9% 0.035 244.4)
#25506F 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) | #425070 | 0.034 |
| Deuteranopia (no green cones) | #38496E | 0.028 |
| Tritanopia (no blue cones) | #00585B | 0.053 |
| Achromatopsia (no color) | #4C4C4C | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25506F
#25506F
oklch(41.5% 0.071 242.4)
- #674320
#674320
oklch(41.7% 0.07 62.9)
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 #25506F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.034
- Light Navy #155084 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.040
- YInMn Blue #415A77 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.049
- Deep Teal #00555A ΔE 0.049
- Dusk Blue #26538D ΔE 0.050
- Charcoal #264653 ΔE 0.051
Use #25506F 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.