#0A476D
Closest named color: Twilight Blue (#0A437A). oklch(38.2% 0.087 243), rgb(10, 71, 109).
Aa
White text reads best on this color (9.83:1).
About this color
#0A476D is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.087 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.028 away. White text reads best on it, at 9.83:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.13:1 |
| White text | 9.83:1 |
Values
| HEX | #0A476D |
| RGB | rgb(10, 71, 109) |
| HSL | hsl(203, 83%, 23%) |
| OKLCH | oklch(38.2% 0.087 243) |
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 #0A476D | 9.83:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #0A476D | 2.13:1 | Fails | Lc 11.5 | Not readable |
| #0A476D text on white | 9.83:1 | AAA | Lc 92.4 | Preferred for body text |
| #0A476D text on black | 2.13:1 | Fails | Lc -10.0 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF6
oklch(93.7% 0.019 243)
-
Step 200
200
#C5DDF0
oklch(88.6% 0.037 241.8)
-
Step 300
300
#9DC6E8
oklch(80.9% 0.065 243.7)
-
Step 400
400
#63A8DC
oklch(70.7% 0.104 242.7)
-
Step 500
500
#2F91D3
oklch(63.1% 0.133 243.1)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900 (this color)
#0A476D
oklch(38.2% 0.087 243)
-
Step 950
950
#09293F
oklch(27% 0.055 243)
#0A476D 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) | #35486F | 0.039 |
| Deuteranopia (no green cones) | #273F6C | 0.030 |
| Tritanopia (no blue cones) | #005055 | 0.058 |
| Achromatopsia (no color) | #434343 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A476D
#0A476D
oklch(38.2% 0.087 243)
- #623701
#623701
oklch(38.2% 0.086 63.6)
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 #0A476D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.036
- Light Navy #155084 ΔE 0.045
- Charcoal #264653 ΔE 0.047
- Marine Blue #01386A ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.059
- Cobalt #1E488F ΔE 0.060
Use #0A476D 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.