#09315B
Closest named color: Marine (#042E60). oklch(31.2% 0.087 253.5), rgb(9, 49, 91).
Aa
White text reads best on this color (13.10:1).
About this color
#09315B is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.087 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.014 away. White text reads best on it, at 13.10:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.60:1 |
| White text | 13.10:1 |
Values
| HEX | #09315B |
| RGB | rgb(9, 49, 91) |
| HSL | hsl(211, 82%, 20%) |
| OKLCH | oklch(31.2% 0.087 253.5) |
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 #09315B | 13.10:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #09315B | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #09315B text on white | 13.10:1 | AAA | Lc 99.0 | Preferred for body text |
| #09315B text on black | 1.60:1 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DDECFE
oklch(93.7% 0.029 252.9)
-
Step 200
200
#C0DCFF
oklch(88.5% 0.057 254.1)
-
Step 300
300
#94C4FF
oklch(80.8% 0.098 254)
-
Step 400
400
#53A3FF
oklch(70.7% 0.157 253.6)
-
Step 500
500
#0088FC
oklch(63% 0.198 253.6)
-
Step 600
600
#0072D5
oklch(55.5% 0.175 253.6)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004E95
oklch(42.6% 0.134 253.6)
-
Step 900
900
#00417E
oklch(37.7% 0.118 253.6)
-
Step 950
950 (this color)
#09315B
oklch(31.2% 0.087 253.5)
#09315B 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) | #1C345D | 0.021 |
| Deuteranopia (no green cones) | #0C2D5A | 0.012 |
| Tritanopia (no blue cones) | #003B41 | 0.065 |
| Achromatopsia (no color) | #303030 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09315B
#09315B
oklch(31.2% 0.087 253.5)
- #452B00
#452B00
oklch(31.3% 0.067 73.7)
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 #09315B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.014
- Prussian Blue #1D3557 ΔE 0.025
- Marine Blue #01386A ΔE 0.031
- Midnight Green #073B4C ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.056
- Gunmetal #293241 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.062
Use #09315B 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.