#37355F
Closest named color: Prussian Blue (#1D3557). oklch(35.2% 0.072 284.2), rgb(55, 53, 95).
Aa
White text reads best on this color (11.43:1).
About this color
#37355F is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.072 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.041 away. White text reads best on it, at 11.43:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.83:1 |
| White text | 11.43:1 |
Values
| HEX | #37355F |
| RGB | rgb(55, 53, 95) |
| HSL | hsl(243, 28%, 29%) |
| OKLCH | oklch(35.2% 0.072 284.2) |
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 #37355F | 11.43:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #37355F | 1.83:1 | Fails | Lc 7.6 | Not readable |
| #37355F text on white | 11.43:1 | AAA | Lc 96.3 | Preferred for body text |
| #37355F text on black | 1.83:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D6D7ED
oklch(88.5% 0.03 283.7)
-
Step 300
300
#BCBDE3
oklch(81% 0.053 284)
-
Step 400
400
#9A99D5
oklch(70.6% 0.087 284.7)
-
Step 500
500
#827FCA
oklch(63% 0.111 284.5)
-
Step 600
600
#6C68B6
oklch(55.6% 0.119 284.2)
-
Step 700
700
#5A569D
oklch(49.1% 0.111 284.1)
-
Step 800
800
#4A477F
oklch(42.8% 0.091 284.3)
-
Step 900
900 (this color)
#37355F
oklch(35.2% 0.072 284.2)
-
Step 950
950
#24233C
oklch(27% 0.046 284.7)
#37355F 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) | #273B61 | 0.027 |
| Deuteranopia (no green cones) | #25385E | 0.027 |
| Tritanopia (no blue cones) | #2C3D45 | 0.061 |
| Achromatopsia (no color) | #3A3A3A | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37355F
#37355F
oklch(35.2% 0.072 284.2)
- #413D04
#413D04
oklch(35.3% 0.072 105.2)
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 #37355F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.057
- Marine Blue #01386A ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.058
- Gunmetal #293241 ΔE 0.059
- Onyx #343A40 ΔE 0.062
- Charcoal #264653 ΔE 0.066
Use #37355F 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.