#09304B
Closest named color: Prussian Blue (#1D3557). oklch(29.8% 0.065 244), rgb(9, 48, 75).
Aa
White text reads best on this color (13.67:1).
About this color
#09304B is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.065 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.034 away. White text reads best on it, at 13.67:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.53:1 |
| White text | 13.67:1 |
Values
| HEX | #09304B |
| RGB | rgb(9, 48, 75) |
| HSL | hsl(205, 79%, 16%) |
| OKLCH | oklch(29.8% 0.065 244) |
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 #09304B | 13.67:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #09304B | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #09304B text on white | 13.67:1 | AAA | Lc 100.0 | Preferred for body text |
| #09304B text on black | 1.53:1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C2DDF4
oklch(88.5% 0.043 244)
-
Step 300
300
#96C7EF
oklch(80.9% 0.077 243.5)
-
Step 400
400
#56A8E7
oklch(70.7% 0.123 244)
-
Step 500
500
#0091E0
oklch(63.2% 0.156 243.9)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950 (this color)
#09304B
oklch(29.8% 0.065 244)
#09304B 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) | #23314C | 0.028 |
| Deuteranopia (no green cones) | #1A2B4A | 0.021 |
| Tritanopia (no blue cones) | #00373A | 0.045 |
| Achromatopsia (no color) | #2E2E2E | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09304B
#09304B
oklch(29.8% 0.065 244)
- #432503
#432503
oklch(29.7% 0.064 63.7)
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 #09304B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.034
- Midnight Green #073B4C ΔE 0.037
- Marine #042E60 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.040
- Gunmetal #293241 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.045
- Dark #1B2431 ΔE 0.055
Use #09304B 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.