#372F70
Closest named color: Marine Blue (#01386A). oklch(35.2% 0.108 285), rgb(55, 47, 112).
Aa
White text reads best on this color (11.64:1).
About this color
#372F70 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.108 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.061 away. White text reads best on it, at 11.64:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #372F70 |
| RGB | rgb(55, 47, 112) |
| HSL | hsl(247, 41%, 31%) |
| OKLCH | oklch(35.2% 0.108 285) |
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 #372F70 | 11.64:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #372F70 | 1.80:1 | Fails | Lc 7.3 | Not readable |
| #372F70 text on white | 11.64:1 | AAA | Lc 96.5 | Preferred for body text |
| #372F70 text on black | 1.80:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D5D6F7
oklch(88.6% 0.045 284.1)
-
Step 300
300
#BABAF4
oklch(80.9% 0.081 284.4)
-
Step 400
400
#9994EE
oklch(70.8% 0.13 285.1)
-
Step 500
500
#8176E8
oklch(63% 0.166 284.9)
-
Step 600
600
#6C5CD6
oklch(55.5% 0.18 284.9)
-
Step 700
700
#5B4BBA
oklch(49.1% 0.168 285)
-
Step 800
800
#4A3E96
oklch(42.6% 0.139 285.1)
-
Step 900
900 (this color)
#372F70
oklch(35.2% 0.108 285)
-
Step 950
950
#242046
oklch(27% 0.069 285.6)
#372F70 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) | #083A72 | 0.055 |
| Deuteranopia (no green cones) | #05366F | 0.056 |
| Tritanopia (no blue cones) | #233D4A | 0.091 |
| Achromatopsia (no color) | #383838 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372F70
#372F70
oklch(35.2% 0.108 285)
- #413D00
#413D00
oklch(35.3% 0.075 105.5)
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 #372F70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.065
- Twilight Blue #0A437A ΔE 0.067
- Marine #042E60 ΔE 0.069
- Midnight Blue #191970 ΔE 0.077
- Blueberry #464196 ΔE 0.082
- Cobalt #1E488F ΔE 0.082
Use #372F70 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.