#255291
Closest named color: Dusk Blue (#26538D). oklch(44.1% 0.115 257.4), rgb(37, 82, 145).
Aa
White text reads best on this color (7.79:1).
About this color
#255291 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.115 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.008 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #255291 |
| RGB | rgb(37, 82, 145) |
| HSL | hsl(215, 59%, 36%) |
| OKLCH | oklch(44.1% 0.115 257.4) |
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 #255291 | 7.79:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #255291 | 2.69:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #255291 text on white | 7.79:1 | AAA | Lc 86.7 | Fine for body text |
| #255291 text on black | 2.69:1 | Fails | Lc -15.3 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EC
oklch(81% 0.066 257)
-
Step 400
400
#75A2E3
oklch(70.6% 0.108 257.5)
-
Step 500
500
#508ADB
oklch(63.1% 0.137 257.1)
-
Step 600
600
#3472C9
oklch(55.7% 0.149 257.5)
-
Step 700
700
#265FAE
oklch(49.1% 0.139 257.5)
-
Step 800
800 (this color)
#255291
oklch(44.1% 0.115 257.4)
-
Step 900
900
#204170
oklch(37.6% 0.09 257.5)
-
Step 950
950
#132742
oklch(27.1% 0.057 256.4)
#255291 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) | #335893 | 0.024 |
| Deuteranopia (no green cones) | #214E90 | 0.013 |
| Tritanopia (no blue cones) | #00616A | 0.091 |
| Achromatopsia (no color) | #525252 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255291
#255291
oklch(44.1% 0.115 257.4)
- #6F4B00
#6F4B00
oklch(44.2% 0.092 77.2)
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 #255291, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.008
- Light Navy #155084 ΔE 0.026
- Cobalt #1E488F ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.037
- Twilight #4E518B ΔE 0.049
- Dusk #4E5481 ΔE 0.056
Use #255291 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.