#263E78
Closest named color: Twilight Blue (#0A437A). oklch(37.7% 0.103 265), rgb(38, 62, 120).
Aa
White text reads best on this color (10.28:1).
About this color
#263E78 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.103 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.023 away. White text reads best on it, at 10.28:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.04:1 |
| White text | 10.28:1 |
Values
| HEX | #263E78 |
| RGB | rgb(38, 62, 120) |
| HSL | hsl(222, 52%, 31%) |
| OKLCH | oklch(37.7% 0.103 265) |
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 #263E78 | 10.28:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #263E78 | 2.04:1 | Fails | Lc 10.3 | Not readable |
| #263E78 text on white | 10.28:1 | AAA | Lc 93.6 | Preferred for body text |
| #263E78 text on black | 2.04:1 | Fails | Lc -8.9 | 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 900.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A8C0F4
oklch(80.8% 0.079 265.4)
-
Step 400
400
#7A9EEE
oklch(70.6% 0.124 265)
-
Step 500
500
#5984E8
oklch(63.1% 0.158 264.8)
-
Step 600
600
#406BD7
oklch(55.6% 0.173 264.9)
-
Step 700
700
#3259BA
oklch(49.2% 0.16 264.7)
-
Step 800
800
#2A4997
oklch(42.7% 0.133 265)
-
Step 900
900 (this color)
#263E78
oklch(37.7% 0.103 265)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#263E78 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) | #21457A | 0.020 |
| Deuteranopia (no green cones) | #113D77 | 0.020 |
| Tritanopia (no blue cones) | #004B55 | 0.085 |
| Achromatopsia (no color) | #414141 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263E78
#263E78
oklch(37.7% 0.103 265)
- #543E00
#543E00
oklch(37.8% 0.077 85.9)
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 #263E78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.023
- Marine Blue #01386A ΔE 0.044
- Cobalt #1E488F ΔE 0.044
- Light Navy #155084 ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
- Deep Sea Blue #015482 ΔE 0.064
Use #263E78 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.