#254F99
Closest named color: Dusk Blue (#26538D). oklch(44% 0.13 260.8), rgb(37, 79, 153).
Aa
White text reads best on this color (7.90:1).
About this color
#254F99 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.130 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.024 away. White text reads best on it, at 7.90:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #254F99 |
| RGB | rgb(37, 79, 153) |
| HSL | hsl(218, 61%, 37%) |
| OKLCH | oklch(44% 0.13 260.8) |
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 #254F99 | 7.90:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #254F99 | 2.65:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #254F99 text on white | 7.90:1 | AAA | Lc 87.0 | Fine for body text |
| #254F99 text on black | 2.65:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A5C2F2
oklch(80.9% 0.075 260.4)
-
Step 400
400
#74A0EC
oklch(70.6% 0.122 260.9)
-
Step 500
500
#5087E6
oklch(63.1% 0.155 260.6)
-
Step 600
600
#346ED4
oklch(55.5% 0.169 260.8)
-
Step 700
700
#275BB8
oklch(49% 0.158 261)
-
Step 800
800 (this color)
#254F99
oklch(44% 0.13 260.8)
-
Step 900
900
#204077
oklch(37.8% 0.101 260.5)
-
Step 950
950
#132645
oklch(27.1% 0.063 259.7)
#254F99 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) | #27579C | 0.023 |
| Deuteranopia (no green cones) | #054C98 | 0.022 |
| Tritanopia (no blue cones) | #00616C | 0.104 |
| Achromatopsia (no color) | #515151 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254F99
#254F99
oklch(44% 0.13 260.8)
- #6C4C00
#6C4C00
oklch(44% 0.091 80.8)
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 #254F99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.024
- Cobalt #1E488F ΔE 0.026
- Light Navy #155084 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.048
- Blueberry #464196 ΔE 0.050
- Twilight #4E518B ΔE 0.055
Use #254F99 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.