#0A2B4A
Closest named color: Oxford Blue (#1B263B). oklch(28.4% 0.068 250.5), rgb(10, 43, 74).
Aa
White text reads best on this color (14.40:1).
About this color
#0A2B4A is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.068 and its hue 251°. 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 14.40:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.45:1 |
| White text | 14.40:1 |
Values
| HEX | #0A2B4A |
| RGB | rgb(10, 43, 74) |
| HSL | hsl(209, 76%, 16%) |
| OKLCH | oklch(28.4% 0.068 250.5) |
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 #0A2B4A | 14.40:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #0A2B4A | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #0A2B4A text on white | 14.40:1 | AAA | Lc 100.9 | Preferred for body text |
| #0A2B4A text on black | 1.45:1 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#99C5F4
oklch(80.9% 0.082 250.5)
-
Step 400
400
#5EA5EE
oklch(70.7% 0.129 250.7)
-
Step 500
500
#248CE9
oklch(63% 0.166 250.8)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900
#004378
oklch(37.8% 0.108 250.3)
-
Step 950
950 (this color)
#0A2B4A
oklch(28.4% 0.068 250.5)
#0A2B4A 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) | #1C2D4B | 0.021 |
| Deuteranopia (no green cones) | #132749 | 0.014 |
| Tritanopia (no blue cones) | #003236 | 0.050 |
| Achromatopsia (no color) | #2A2A2A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2B4A
#0A2B4A
oklch(28.4% 0.068 250.5)
- #3D2300
#3D2300
oklch(28.3% 0.062 69)
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 #0A2B4A, 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 0.040
- Prussian Blue #1D3557 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.045
- Dark #1B2431 ΔE 0.048
- Gunmetal #293241 ΔE 0.051
- Midnight Green #073B4C ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #0A2B4A 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.