#10254A
Closest named color: Oxford Blue (#1B263B). oklch(27% 0.074 260.8), rgb(16, 37, 74).
Aa
White text reads best on this color (15.15:1).
About this color
#10254A is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.074 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.032 away. White text reads best on it, at 15.15:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.15:1 |
Values
| HEX | #10254A |
| RGB | rgb(16, 37, 74) |
| HSL | hsl(218, 64%, 18%) |
| OKLCH | oklch(27% 0.074 260.8) |
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 #10254A | 15.15:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #10254A | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #10254A text on white | 15.15:1 | AAA | Lc 101.9 | Preferred for body text |
| #10254A text on black | 1.38:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFB
oklch(93.5% 0.025 261.1)
-
Step 200
200
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#A1C2FA
oklch(81% 0.087 260.8)
-
Step 400
400
#6DA0F7
oklch(70.8% 0.139 260.5)
-
Step 500
500
#4685F4
oklch(63.2% 0.179 260.8)
-
Step 600
600
#276BE3
oklch(55.6% 0.195 260.9)
-
Step 700
700
#1A58C5
oklch(49% 0.182 260.9)
-
Step 800
800
#18499F
oklch(42.7% 0.15 260.8)
-
Step 900
900
#1A3E7E
oklch(37.6% 0.116 260.9)
-
Step 950
950 (this color)
#10254A
oklch(27% 0.074 260.8)
#10254A 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) | #12294B | 0.013 |
| Deuteranopia (no green cones) | #072349 | 0.012 |
| Tritanopia (no blue cones) | #002E33 | 0.061 |
| Achromatopsia (no color) | #262626 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10254A
#10254A
oklch(27% 0.074 260.8)
- #342300
#342300
oklch(27% 0.056 81.4)
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 #10254A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.032
- Marine #042E60 ΔE 0.045
- Dark #1B2431 ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.058
- Gunmetal #293241 ΔE 0.063
- Jet #212529 ΔE 0.065
- Rich Black #0D1B2A ΔE 0.066
Use #10254A 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.