#372D57
Closest named color: Prussian Blue (#1D3557). oklch(32.9% 0.073 292.9), rgb(55, 45, 87).
Aa
White text reads best on this color (12.53:1).
About this color
#372D57 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.073 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.043 away. White text reads best on it, at 12.53:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.67:1 |
| White text | 12.53:1 |
Values
| HEX | #372D57 |
| RGB | rgb(55, 45, 87) |
| HSL | hsl(254, 32%, 26%) |
| OKLCH | oklch(32.9% 0.073 292.9) |
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 #372D57 | 12.53:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #372D57 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #372D57 text on white | 12.53:1 | AAA | Lc 98.4 | Preferred for body text |
| #372D57 text on black | 1.67:1 | 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
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6EC
oklch(88.5% 0.03 292)
-
Step 300
300
#C1BBE2
oklch(81% 0.055 292.2)
-
Step 400
400
#A297D3
oklch(70.8% 0.087 292.4)
-
Step 500
500
#8C7CC7
oklch(63.1% 0.112 292.7)
-
Step 600
600
#7764B4
oklch(55.7% 0.122 292.9)
-
Step 700
700
#64529A
oklch(49% 0.113 293.3)
-
Step 800
800
#51447D
oklch(42.7% 0.093 292.5)
-
Step 900
900 (this color)
#372D57
oklch(32.9% 0.073 292.9)
-
Step 950
950
#27223B
oklch(27% 0.046 292.2)
#372D57 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) | #1F3459 | 0.040 |
| Deuteranopia (no green cones) | #213356 | 0.037 |
| Tritanopia (no blue cones) | #2F353D | 0.061 |
| Achromatopsia (no color) | #343434 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372D57
#372D57
oklch(32.9% 0.073 292.9)
- #363901
#363901
oklch(33.1% 0.073 113)
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 #372D57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.060
- Marine #042E60 ΔE 0.064
- Onyx #343A40 ΔE 0.066
- Marine Blue #01386A ΔE 0.067
- Oxford Blue #1B263B ΔE 0.074
Use #372D57 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.