#10263E
Closest named color: Oxford Blue (#1B263B). oklch(26.4% 0.053 252.3), rgb(16, 38, 62).
Aa
White text reads best on this color (15.34:1).
About this color
#10263E is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.053 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.015 away. White text reads best on it, at 15.34:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.34:1 |
Values
| HEX | #10263E |
| RGB | rgb(16, 38, 62) |
| HSL | hsl(211, 59%, 15%) |
| OKLCH | oklch(26.4% 0.053 252.3) |
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 #10263E | 15.34:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #10263E | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #10263E text on white | 15.34:1 | AAA | Lc 102.1 | Preferred for body text |
| #10263E text on black | 1.36:1 | 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 950.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E9
oklch(80.9% 0.063 252.3)
-
Step 400
400
#71A4DE
oklch(70.6% 0.101 252.4)
-
Step 500
500
#4A8DD5
oklch(63.2% 0.129 252)
-
Step 600
600
#2A75C2
oklch(55.6% 0.14 252.4)
-
Step 700
700
#1C62A8
oklch(49.1% 0.131 252.4)
-
Step 800
800
#1A5088
oklch(42.7% 0.108 252.6)
-
Step 900
900
#1C436D
oklch(37.7% 0.085 252.5)
-
Step 950
950 (this color)
#10263E
oklch(26.4% 0.053 252.3)
#10263E 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) | #1C273F | 0.017 |
| Deuteranopia (no green cones) | #15233E | 0.011 |
| Tritanopia (no blue cones) | #002C2F | 0.043 |
| Achromatopsia (no color) | #252525 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10263E
#10263E
oklch(26.4% 0.053 252.3)
- #352002
#352002
oklch(26.4% 0.054 71.9)
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 #10263E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.015
- Dark #1B2431 ΔE 0.026
- Jet #212529 ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.050
- Gunmetal #293241 ΔE 0.057
- Marine #042E60 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.065
Use #10263E 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.