#25506D
Closest named color: Deep Sea Blue (#015482). oklch(41.4% 0.068 240.7), rgb(37, 80, 109).
Aa
White text reads best on this color (8.58:1).
About this color
#25506D is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.068 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.037 away. White text reads best on it, at 8.58:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.44:1 |
| White text | 8.58:1 |
Values
| HEX | #25506D |
| RGB | rgb(37, 80, 109) |
| HSL | hsl(204, 49%, 29%) |
| OKLCH | oklch(41.4% 0.068 240.7) |
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 #25506D | 8.58:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #25506D | 2.44:1 | Fails | Lc 14.7 | Not readable |
| #25506D text on white | 8.58:1 | AAA | Lc 89.3 | Fine for body text |
| #25506D text on black | 2.44:1 | Fails | Lc -12.9 | 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
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7DA6C5
oklch(70.7% 0.064 241.4)
-
Step 500
500
#5A90B6
oklch(63.1% 0.081 240.4)
-
Step 600
600
#3E7AA2
oklch(55.7% 0.088 240.1)
-
Step 700
700
#30668B
oklch(49% 0.083 241.2)
-
Step 800
800 (this color)
#25506D
oklch(41.4% 0.068 240.7)
-
Step 900
900
#26455B
oklch(37.7% 0.053 241)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#25506D 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) | #43506E | 0.036 |
| Deuteranopia (no green cones) | #39496C | 0.029 |
| Tritanopia (no blue cones) | #00575A | 0.050 |
| Achromatopsia (no color) | #4C4C4C | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25506D
#25506D
oklch(41.4% 0.068 240.7)
- #664222
#664222
oklch(41.3% 0.068 60.8)
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 #25506D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.038
- Light Navy #155084 ΔE 0.040
- Deep Teal #00555A ΔE 0.046
- Charcoal #264653 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.051
- Petrol #005F6A ΔE 0.051
Use #25506D 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.