#25405C
Closest named color: Dark Grey Blue (#29465B). oklch(36.4% 0.059 250.6), rgb(37, 64, 92).
Aa
White text reads best on this color (10.67:1).
About this color
#25405C is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.059 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.021 away. White text reads best on it, at 10.67:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.96:1 |
| White text | 10.67:1 |
Values
| HEX | #25405C |
| RGB | rgb(37, 64, 92) |
| HSL | hsl(211, 43%, 25%) |
| OKLCH | oklch(36.4% 0.059 250.6) |
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 #25405C | 10.67:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #25405C | 1.96:1 | Fails | Lc 9.3 | Not readable |
| #25405C text on white | 10.67:1 | AAA | Lc 94.6 | Preferred for body text |
| #25405C text on black | 1.96:1 | Fails | Lc -8.0 | 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 900.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DD
oklch(80.8% 0.045 251.6)
-
Step 400
400
#7FA4CC
oklch(70.6% 0.072 250.8)
-
Step 500
500
#5E8DBE
oklch(63% 0.09 250.4)
-
Step 600
600
#4477AB
oklch(55.7% 0.098 250.4)
-
Step 700
700
#356493
oklch(49.2% 0.092 250.2)
-
Step 800
800
#2D5177
oklch(42.6% 0.076 251.2)
-
Step 900
900 (this color)
#25405C
oklch(36.4% 0.059 250.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#25405C 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) | #34415D | 0.020 |
| Deuteranopia (no green cones) | #2D3C5B | 0.015 |
| Tritanopia (no blue cones) | #01464A | 0.050 |
| Achromatopsia (no color) | #3E3E3E | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25405C
#25405C
oklch(36.4% 0.059 250.6)
- #523818
#523818
oklch(36.3% 0.059 69.6)
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 #25405C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.021
- Charcoal #264653 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.038
- Midnight Green #073B4C ΔE 0.043
- Marine Blue #01386A ΔE 0.049
- Onyx #343A40 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.053
Use #25405C 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.