#0A2349
Closest named color: Oxford Blue (#1B263B). oklch(26.2% 0.077 258.8), rgb(10, 35, 73).
Aa
White text reads best on this color (15.56:1).
About this color
#0A2349 is a dark, moderately saturated blue. In OKLCH its lightness is 26%, its chroma 0.077 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 15.56:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.56:1 |
Values
| HEX | #0A2349 |
| RGB | rgb(10, 35, 73) |
| HSL | hsl(216, 76%, 16%) |
| OKLCH | oklch(26.2% 0.077 258.8) |
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 #0A2349 | 15.56:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #0A2349 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #0A2349 text on white | 15.56:1 | AAA | Lc 102.3 | Preferred for body text |
| #0A2349 text on black | 1.34:1 | 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
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC2FC
oklch(80.8% 0.092 259.2)
-
Step 400
400
#66A0FB
oklch(70.6% 0.147 259.1)
-
Step 500
500
#3A85F8
oklch(63% 0.187 259)
-
Step 600
600
#116BE7
oklch(55.5% 0.204 258.9)
-
Step 700
700
#0059C9
oklch(49.2% 0.189 258.8)
-
Step 800
800
#0849A2
oklch(42.6% 0.156 258.9)
-
Step 900
900
#123E81
oklch(37.6% 0.123 259.1)
-
Step 950
950 (this color)
#0A2349
oklch(26.2% 0.077 258.8)
#0A2349 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) | #0E274A | 0.014 |
| Deuteranopia (no green cones) | #012148 | 0.012 |
| Tritanopia (no blue cones) | #002C32 | 0.060 |
| Achromatopsia (no color) | #242424 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2349
#0A2349
oklch(26.2% 0.077 258.8)
- #322100
#322100
oklch(26.2% 0.054 80.3)
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 #0A2349, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.050
- Marine #042E60 ΔE 0.051
- Navy Blue #001146 ΔE 0.057
- Rich Black #0D1B2A ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.067
- Dark Indigo #1F0954 ΔE 0.068
Use #0A2349 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.