#253F96
Closest named color: Cobalt (#1E488F). oklch(40.3% 0.146 266.9), rgb(37, 63, 150).
Aa
White text reads best on this color (9.41:1).
About this color
#253F96 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.146 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.027 away. White text reads best on it, at 9.41:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.23:1 |
| White text | 9.41:1 |
Values
| HEX | #253F96 |
| RGB | rgb(37, 63, 150) |
| HSL | hsl(226, 60%, 37%) |
| OKLCH | oklch(40.3% 0.146 266.9) |
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 #253F96 | 9.41:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #253F96 | 2.23:1 | Fails | Lc 12.7 | Not readable |
| #253F96 text on white | 9.41:1 | AAA | Lc 91.3 | Preferred for body text |
| #253F96 text on black | 2.23:1 | Fails | Lc -11.1 | 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 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9FA
oklch(88.5% 0.048 267.2)
-
Step 300
300
#A8C0F9
oklch(81% 0.085 266.8)
-
Step 400
400
#7A9CF6
oklch(70.6% 0.138 267.2)
-
Step 500
500
#5A81F2
oklch(63.1% 0.175 267)
-
Step 600
600
#4167E1
oklch(55.6% 0.191 266.9)
-
Step 700
700
#3455C3
oklch(49.1% 0.176 267)
-
Step 800
800 (this color)
#253F96
oklch(40.3% 0.146 266.9)
-
Step 900
900
#263C7D
oklch(37.7% 0.114 266.8)
-
Step 950
950
#162449
oklch(27% 0.071 266.2)
#253F96 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) | #004C99 | 0.036 |
| Deuteranopia (no green cones) | #004194 | 0.023 |
| Tritanopia (no blue cones) | #005564 | 0.117 |
| Achromatopsia (no color) | #464646 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #253F96
#253F96
oklch(40.3% 0.146 266.9)
- #5C4500
#5C4500
oklch(40.4% 0.083 86.9)
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 #253F96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.027
- Sapphire #2138AB ΔE 0.038
- Blueberry #464196 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight Blue #0A437A ΔE 0.054
- Light Navy #155084 ΔE 0.059
- Dusk Blue #26538D ΔE 0.059
- Deep Sea Blue #015482 ΔE 0.072
Use #253F96 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.