#0A244E
Closest named color: Oxford Blue (#1B263B). oklch(26.8% 0.084 259.7), rgb(10, 36, 78).
Aa
White text reads best on this color (15.26:1).
About this color
#0A244E is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.084 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.042 away. White text reads best on it, at 15.26:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.26:1 |
Values
| HEX | #0A244E |
| RGB | rgb(10, 36, 78) |
| HSL | hsl(217, 77%, 17%) |
| OKLCH | oklch(26.8% 0.084 259.7) |
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 #0A244E | 15.26:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #0A244E | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #0A244E text on white | 15.26:1 | AAA | Lc 101.9 | Preferred for body text |
| #0A244E 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFE
oklch(88.6% 0.054 258.7)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3783FF
oklch(63% 0.199 259.9)
-
Step 600
600
#0568F1
oklch(55.6% 0.221 259.8)
-
Step 700
700
#0057CD
oklch(49.1% 0.196 259.6)
-
Step 800
800
#0247A9
oklch(42.7% 0.169 259.7)
-
Step 900
900
#0E3D86
oklch(37.7% 0.132 259.6)
-
Step 950
950 (this color)
#0A244E
oklch(26.8% 0.084 259.7)
#0A244E 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) | #0B2950 | 0.016 |
| Deuteranopia (no green cones) | #00224D | 0.012 |
| Tritanopia (no blue cones) | #002E35 | 0.064 |
| Achromatopsia (no color) | #252525 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A244E
#0A244E
oklch(26.8% 0.084 259.7)
- #342200
#342200
oklch(26.7% 0.056 79.3)
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 #0A244E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.042
- Marine #042E60 ΔE 0.042
- Dark #1B2431 ΔE 0.057
- Navy Blue #001146 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.062
- Dark Indigo #1F0954 ΔE 0.067
- Midnight Blue #191970 ΔE 0.068
Use #0A244E 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.