#0A4474
Closest named color: Twilight Blue (#0A437A). oklch(37.9% 0.099 249.6), rgb(10, 68, 116).
Aa
White text reads best on this color (10.03:1).
About this color
#0A4474 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.099 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.011 away. White text reads best on it, at 10.03:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.09:1 |
| White text | 10.03:1 |
Values
| HEX | #0A4474 |
| RGB | rgb(10, 68, 116) |
| HSL | hsl(207, 84%, 25%) |
| OKLCH | oklch(37.9% 0.099 249.6) |
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 #0A4474 | 10.03:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #0A4474 | 2.09:1 | Fails | Lc 11.1 | Not readable |
| #0A4474 text on white | 10.03:1 | AAA | Lc 92.9 | Preferred for body text |
| #0A4474 text on black | 2.09:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9CC5EF
oklch(80.9% 0.074 249.4)
-
Step 400
400
#63A6E8
oklch(70.8% 0.119 249.5)
-
Step 500
500
#308DE1
oklch(63% 0.153 249.9)
-
Step 600
600
#0076C9
oklch(55.6% 0.155 249.4)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900 (this color)
#0A4474
oklch(37.9% 0.099 249.6)
-
Step 950
950
#092844
oklch(27.1% 0.063 249.6)
#0A4474 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) | #2C4776 | 0.031 |
| Deuteranopia (no green cones) | #1B3E73 | 0.019 |
| Tritanopia (no blue cones) | #005056 | 0.073 |
| Achromatopsia (no color) | #424242 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A4474
#0A4474
oklch(37.9% 0.099 249.6)
- #5E3900
#5E3900
oklch(38% 0.083 69.6)
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 #0A4474, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.011
- Marine Blue #01386A ΔE 0.040
- Light Navy #155084 ΔE 0.044
- Cobalt #1E488F ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.061
- Charcoal #264653 ΔE 0.061
Use #0A4474 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.