#254C8D
Closest named color: Cobalt (#1E488F). oklch(42.4% 0.117 260), rgb(37, 76, 141).
Aa
White text reads best on this color (8.40:1).
About this color
#254C8D is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.117 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.015 away. White text reads best on it, at 8.40:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.49:1 |
| White text | 8.40:1 |
Values
| HEX | #254C8D |
| RGB | rgb(37, 76, 141) |
| HSL | hsl(218, 58%, 35%) |
| OKLCH | oklch(42.4% 0.117 260) |
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 #254C8D | 8.40:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #254C8D | 2.49:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #254C8D text on white | 8.40:1 | AAA | Lc 88.7 | Fine for body text |
| #254C8D text on black | 2.49:1 | Fails | Lc -13.5 | 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 800.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2ED
oklch(80.9% 0.068 259.6)
-
Step 400
400
#78A1E5
oklch(70.7% 0.11 260.2)
-
Step 500
500
#5588DD
oklch(63.1% 0.14 260.1)
-
Step 600
600
#3A70CA
oklch(55.5% 0.151 260)
-
Step 700
700
#2C5DAF
oklch(49% 0.141 260.1)
-
Step 800
800 (this color)
#254C8D
oklch(42.4% 0.117 260)
-
Step 900
900
#234071
oklch(37.6% 0.091 260.3)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#254C8D 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) | #2B528F | 0.019 |
| Deuteranopia (no green cones) | #16498C | 0.016 |
| Tritanopia (no blue cones) | #005B65 | 0.093 |
| Achromatopsia (no color) | #4D4D4D | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254C8D
#254C8D
oklch(42.4% 0.117 260)
- #674800
#674800
oklch(42.5% 0.088 80.4)
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 #254C8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.015
- Dusk Blue #26538D ΔE 0.021
- Light Navy #155084 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.047
- Blueberry #464196 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.053
Use #254C8D 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.