#302F5B
Closest named color: Prussian Blue (#1D3557). oklch(33% 0.076 282.4), rgb(48, 47, 91).
Aa
White text reads best on this color (12.47:1).
About this color
#302F5B is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.076 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.033 away. White text reads best on it, at 12.47:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.68:1 |
| White text | 12.47:1 |
Values
| HEX | #302F5B |
| RGB | rgb(48, 47, 91) |
| HSL | hsl(241, 32%, 27%) |
| OKLCH | oklch(33% 0.076 282.4) |
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 #302F5B | 12.47:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #302F5B | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #302F5B text on white | 12.47:1 | AAA | Lc 98.3 | Preferred for body text |
| #302F5B text on black | 1.68:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D5D7EE
oklch(88.5% 0.032 281.8)
-
Step 300
300
#BABDE5
oklch(80.9% 0.056 281.7)
-
Step 400
400
#989AD9
oklch(70.8% 0.092 282.4)
-
Step 500
500
#7F7FCE
oklch(63% 0.118 282.5)
-
Step 600
600
#6967BB
oklch(55.5% 0.128 282.5)
-
Step 700
700
#5856A1
oklch(49.2% 0.118 282.4)
-
Step 800
800
#484683
oklch(42.7% 0.099 282.8)
-
Step 900
900 (this color)
#302F5B
oklch(33% 0.076 282.4)
-
Step 950
950
#23233D
oklch(27% 0.048 282.7)
#302F5B 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) | #1E355D | 0.029 |
| Deuteranopia (no green cones) | #1C325A | 0.029 |
| Tritanopia (no blue cones) | #223840 | 0.066 |
| Achromatopsia (no color) | #343434 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #302F5B
#302F5B
oklch(33% 0.076 282.4)
- #3C3600
#3C3600
oklch(32.9% 0.069 102.6)
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 #302F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.046
- Marine #042E60 ΔE 0.051
- Gunmetal #293241 ΔE 0.052
- Marine Blue #01386A ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Midnight Green #073B4C ΔE 0.066
- Onyx #343A40 ΔE 0.068
Use #302F5B 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.