#09317C
Closest named color: Marine Blue (#01386A). oklch(34% 0.135 261.6), rgb(9, 49, 124).
Aa
White text reads best on this color (12.05:1).
About this color
#09317C is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.135 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.038 away. White text reads best on it, at 12.05:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.74:1 |
| White text | 12.05:1 |
Values
| HEX | #09317C |
| RGB | rgb(9, 49, 124) |
| HSL | hsl(219, 86%, 26%) |
| OKLCH | oklch(34% 0.135 261.6) |
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 #09317C | 12.05:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #09317C | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #09317C text on white | 12.05:1 | AAA | Lc 96.9 | Preferred for body text |
| #09317C text on black | 1.74:1 | 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 900.
-
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
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500
#4082FF
oklch(63.1% 0.198 261.6)
-
Step 600
600
#1A66F4
oklch(55.7% 0.225 261.6)
-
Step 700
700
#0C53D4
oklch(49.1% 0.209 261.7)
-
Step 800
800
#0E45AB
oklch(42.6% 0.173 261.6)
-
Step 900
900 (this color)
#09317C
oklch(34% 0.135 261.6)
-
Step 950
950
#0D244F
oklch(27% 0.084 261.5)
#09317C 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) | #003C7F | 0.030 |
| Deuteranopia (no green cones) | #00317B | 0.006 |
| Tritanopia (no blue cones) | #004451 | 0.103 |
| Achromatopsia (no color) | #363636 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09317C
#09317C
oklch(34% 0.135 261.6)
- #4A3300
#4A3300
oklch(33.9% 0.07 80.9)
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 #09317C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.038
- Marine #042E60 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.052
- Midnight Blue #191970 ΔE 0.059
- Royal #0C1793 ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.069
- Cobalt #1E488F ΔE 0.074
- Dark Blue #00008B ΔE 0.083
Use #09317C 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.