#25445D
Closest named color: Dark Grey Blue (#29465B). oklch(37.4% 0.057 244.5), rgb(37, 68, 93).
Aa
White text reads best on this color (10.17:1).
About this color
#25445D is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.057 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.010 away. White text reads best on it, at 10.17:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.06:1 |
| White text | 10.17:1 |
Values
| HEX | #25445D |
| RGB | rgb(37, 68, 93) |
| HSL | hsl(207, 43%, 25%) |
| OKLCH | oklch(37.4% 0.057 244.5) |
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 #25445D | 10.17:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #25445D | 2.06:1 | Fails | Lc 10.4 | Not readable |
| #25445D text on white | 10.17:1 | AAA | Lc 93.5 | Preferred for body text |
| #25445D text on black | 2.06:1 | Fails | Lc -9.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#AAC4DB
oklch(80.8% 0.043 245.1)
-
Step 400
400
#7CA6C9
oklch(70.8% 0.069 244.1)
-
Step 500
500
#5A8FBB
oklch(63.1% 0.087 244.9)
-
Step 600
600
#3E79A7
oklch(55.7% 0.095 244.2)
-
Step 700
700
#30658F
oklch(49% 0.088 245)
-
Step 800
800
#295374
oklch(42.8% 0.072 244.4)
-
Step 900
900 (this color)
#25445D
oklch(37.4% 0.057 244.5)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#25445D 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) | #39445E | 0.026 |
| Deuteranopia (no green cones) | #323F5D | 0.021 |
| Tritanopia (no blue cones) | #004A4D | 0.046 |
| Achromatopsia (no color) | #414141 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25445D
#25445D
oklch(37.4% 0.057 244.5)
- #563A1F
#563A1F
oklch(37.4% 0.057 63.6)
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 #25445D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.010
- Charcoal #264653 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.038
- Midnight Green #073B4C ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.050
- Dark Teal #014D4E ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.051
Use #25445D 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.