#10263F
Closest named color: Oxford Blue (#1B263B). oklch(26.5% 0.055 253.1), rgb(16, 38, 63).
Aa
White text reads best on this color (15.31:1).
About this color
#10263F is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.055 and its hue 253°. 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 15.31:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.31:1 |
Values
| HEX | #10263F |
| RGB | rgb(16, 38, 63) |
| HSL | hsl(212, 59%, 15%) |
| OKLCH | oklch(26.5% 0.055 253.1) |
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 #10263F | 15.31:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #10263F | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #10263F text on white | 15.31:1 | AAA | Lc 102.1 | Preferred for body text |
| #10263F text on black | 1.37:1 | 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
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C4EA
oklch(81% 0.064 253)
-
Step 400
400
#71A4E0
oklch(70.7% 0.104 253.2)
-
Step 500
500
#4A8CD7
oklch(63.1% 0.132 253.2)
-
Step 600
600
#2974C5
oklch(55.5% 0.145 253.4)
-
Step 700
700
#1B61AA
oklch(49% 0.135 253.3)
-
Step 800
800
#19508A
oklch(42.8% 0.112 253)
-
Step 900
900
#1C436E
oklch(37.8% 0.086 253)
-
Step 950
950 (this color)
#10263F
oklch(26.5% 0.055 253.1)
#10263F 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) | #1B2840 | 0.017 |
| Deuteranopia (no green cones) | #15233E | 0.011 |
| Tritanopia (no blue cones) | #002C2F | 0.044 |
| Achromatopsia (no color) | #252525 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10263F
#10263F
oklch(26.5% 0.055 253.1)
- #352001
#352001
oklch(26.4% 0.055 72.8)
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 #10263F, 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 0.028
- Jet #212529 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.051
- Gunmetal #293241 ΔE 0.057
- Marine #042E60 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.064
Use #10263F 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.