#254559
Closest named color: Dark Grey Blue (#29465B). oklch(37.5% 0.051 237.7), rgb(37, 69, 89).
Aa
White text reads best on this color (10.12:1).
About this color
#254559 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.051 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.007 away. White text reads best on it, at 10.12:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.07:1 |
| White text | 10.12:1 |
Values
| HEX | #254559 |
| RGB | rgb(37, 69, 89) |
| HSL | hsl(203, 41%, 25%) |
| OKLCH | oklch(37.5% 0.051 237.7) |
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 #254559 | 10.12:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #254559 | 2.07:1 | Fails | Lc 10.5 | Not readable |
| #254559 text on white | 10.12:1 | AAA | Lc 93.4 | Preferred for body text |
| #254559 text on black | 2.07:1 | Fails | Lc -9.1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE6
oklch(88.6% 0.021 236.8)
-
Step 300
300
#AAC5D7
oklch(80.9% 0.039 237.2)
-
Step 400
400
#7CA7C3
oklch(70.7% 0.062 237.3)
-
Step 500
500
#5A91B3
oklch(63.2% 0.078 236.9)
-
Step 600
600
#3E7A9F
oklch(55.5% 0.085 238)
-
Step 700
700
#2F6788
oklch(49.1% 0.079 237.3)
-
Step 800
800
#28546F
oklch(42.7% 0.066 238)
-
Step 900
900 (this color)
#254559
oklch(37.5% 0.051 237.7)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#254559 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) | #3C455A | 0.030 |
| Deuteranopia (no green cones) | #353F59 | 0.026 |
| Tritanopia (no blue cones) | #034A4C | 0.040 |
| Achromatopsia (no color) | #424242 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254559
#254559
oklch(37.5% 0.051 237.7)
- #563A25
#563A25
oklch(37.5% 0.052 57.3)
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 #254559, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.007
- Charcoal #264653 ΔE 0.012
- Dark Blue Grey #1F3B4D ΔE 0.037
- Dark Teal #014D4E ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.045
- Midnight Green #073B4C ΔE 0.048
- Onyx #343A40 ΔE 0.048
Use #254559 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.