#254FA4
Closest named color: Cobalt (#1E488F). oklch(44.8% 0.146 262.4), rgb(37, 79, 164).
Aa
White text reads best on this color (7.68:1).
About this color
#254FA4 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.146 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.039 away. White text reads best on it, at 7.68:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #254FA4 |
| RGB | rgb(37, 79, 164) |
| HSL | hsl(220, 63%, 39%) |
| OKLCH | oklch(44.8% 0.146 262.4) |
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 #254FA4 | 7.68:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #254FA4 | 2.73:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #254FA4 text on white | 7.68:1 | AAA | Lc 86.3 | Fine for body text |
| #254FA4 text on black | 2.73:1 | Fails | Lc -15.8 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A3C1F8
oklch(80.8% 0.085 262.3)
-
Step 400
400
#729FF5
oklch(70.7% 0.136 262.5)
-
Step 500
500
#4D84F1
oklch(63.1% 0.174 262.4)
-
Step 600
600
#316BE0
oklch(55.7% 0.189 262.3)
-
Step 700
700
#2458C2
oklch(49.1% 0.175 262.3)
-
Step 800
800 (this color)
#254FA4
oklch(44.8% 0.146 262.4)
-
Step 900
900
#1E3E7D
oklch(37.7% 0.114 262.2)
-
Step 950
950
#122549
oklch(27% 0.071 261.9)
#254FA4 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) | #1859A7 | 0.027 |
| Deuteranopia (no green cones) | #004EA2 | 0.020 |
| Tritanopia (no blue cones) | #006472 | 0.115 |
| Achromatopsia (no color) | #535353 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254FA4
#254FA4
oklch(44.8% 0.146 262.4)
- #6E4F00
#6E4F00
oklch(44.9% 0.092 82.4)
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 #254FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.039
- Dusk Blue #26538D ΔE 0.041
- Blueberry #464196 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.055
- Light Navy #155084 ΔE 0.055
- Sapphire #2138AB ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.064
Use #254FA4 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.