#30345E
Closest named color: Prussian Blue (#1D3557). oklch(34.3% 0.073 277.7), rgb(48, 52, 94).
Aa
White text reads best on this color (11.80:1).
About this color
#30345E is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.073 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.030 away. White text reads best on it, at 11.80:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.80:1 |
Values
| HEX | #30345E |
| RGB | rgb(48, 52, 94) |
| HSL | hsl(235, 32%, 28%) |
| OKLCH | oklch(34.3% 0.073 277.7) |
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 #30345E | 11.80:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #30345E | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #30345E text on white | 11.80:1 | AAA | Lc 97.0 | Preferred for body text |
| #30345E text on black | 1.77:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8EE
oklch(88.6% 0.03 277.6)
-
Step 300
300
#B7BEE5
oklch(80.9% 0.056 277.1)
-
Step 400
400
#939CD7
oklch(70.8% 0.087 277.2)
-
Step 500
500
#7982CD
oklch(63.1% 0.113 277.4)
-
Step 600
600
#636AB9
oklch(55.5% 0.122 277.8)
-
Step 700
700
#5258A0
oklch(49% 0.114 277.7)
-
Step 800
800
#434881
oklch(42.6% 0.094 277.8)
-
Step 900
900 (this color)
#30345E
oklch(34.3% 0.073 277.7)
-
Step 950
950
#21243D
oklch(27% 0.047 277.6)
#30345E 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) | #243960 | 0.021 |
| Deuteranopia (no green cones) | #21365D | 0.021 |
| Tritanopia (no blue cones) | #203D44 | 0.065 |
| Achromatopsia (no color) | #383838 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30345E
#30345E
oklch(34.3% 0.073 277.7)
- #433800
#433800
oklch(34.2% 0.071 96.8)
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 #30345E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.030
- Marine Blue #01386A ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.052
- Gunmetal #293241 ΔE 0.053
- Marine #042E60 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.058
- Midnight Green #073B4C ΔE 0.061
Use #30345E 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.