#10253D
Closest named color: Oxford Blue (#1B263B). oklch(26.1% 0.053 253.2), rgb(16, 37, 61).
Aa
White text reads best on this color (15.50:1).
About this color
#10253D is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.053 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.016 away. White text reads best on it, at 15.50:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.50:1 |
Values
| HEX | #10253D |
| RGB | rgb(16, 37, 61) |
| HSL | hsl(212, 58%, 15%) |
| OKLCH | oklch(26.1% 0.053 253.2) |
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 #10253D | 15.50:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #10253D | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #10253D text on white | 15.50:1 | AAA | Lc 102.3 | Preferred for body text |
| #10253D text on black | 1.35:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF0
oklch(88.5% 0.034 253.7)
-
Step 300
300
#A5C4E9
oklch(81% 0.062 253.1)
-
Step 400
400
#73A4DE
oklch(70.7% 0.1 253.3)
-
Step 500
500
#4D8CD5
oklch(63.1% 0.128 253.5)
-
Step 600
600
#2E75C2
oklch(55.7% 0.139 253.2)
-
Step 700
700
#2062A7
oklch(49.2% 0.128 252.9)
-
Step 800
800
#1D5088
oklch(42.8% 0.108 253.4)
-
Step 900
900
#1E436C
oklch(37.7% 0.082 252.9)
-
Step 950
950 (this color)
#10253D
oklch(26.1% 0.053 253.2)
#10253D 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) | #1B263E | 0.015 |
| Deuteranopia (no green cones) | #14223D | 0.011 |
| Tritanopia (no blue cones) | #002B2E | 0.043 |
| Achromatopsia (no color) | #242424 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10253D
#10253D
oklch(26.1% 0.053 253.2)
- #331F02
#331F02
oklch(25.9% 0.053 72.6)
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 #10253D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.016
- Dark #1B2431 ΔE 0.025
- Jet #212529 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.060
- Marine #042E60 ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.069
Use #10253D 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.