#263B65
Closest named color: Prussian Blue (#1D3557). oklch(35.7% 0.078 263), rgb(38, 59, 101).
Aa
White text reads best on this color (11.07:1).
About this color
#263B65 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.078 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.032 away. White text reads best on it, at 11.07:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #263B65 |
| RGB | rgb(38, 59, 101) |
| HSL | hsl(220, 45%, 27%) |
| OKLCH | oklch(35.7% 0.078 263) |
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 #263B65 | 11.07:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #263B65 | 1.89:1 | Fails | Lc 8.4 | Not readable |
| #263B65 text on white | 11.07:1 | AAA | Lc 95.5 | Preferred for body text |
| #263B65 text on black | 1.89:1 | Fails | Lc 0.0 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ADC1E7
oklch(80.9% 0.058 263.2)
-
Step 400
400
#82A0DB
oklch(70.6% 0.093 263.4)
-
Step 500
500
#6288D2
oklch(63.1% 0.12 262.8)
-
Step 600
600
#4970BF
oklch(55.5% 0.131 263)
-
Step 700
700
#3B5EA5
oklch(49.2% 0.121 262.9)
-
Step 800
800
#314D85
oklch(42.7% 0.099 262.8)
-
Step 900
900 (this color)
#263B65
oklch(35.7% 0.078 263)
-
Step 950
950
#19263F
oklch(27% 0.05 262.6)
#263B65 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) | #293F67 | 0.013 |
| Deuteranopia (no green cones) | #213964 | 0.009 |
| Tritanopia (no blue cones) | #00444B | 0.067 |
| Achromatopsia (no color) | #3C3C3C | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263B65
#263B65
oklch(35.7% 0.078 263)
- #4F3800
#4F3800
oklch(35.7% 0.073 82.8)
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 #263B65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.032
- Marine Blue #01386A ΔE 0.034
- Twilight Blue #0A437A ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.045
- Charcoal #264653 ΔE 0.053
- Midnight Green #073B4C ΔE 0.055
- Marine #042E60 ΔE 0.056
Use #263B65 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.