#373375
Closest named color: Dark Slate Blue (#483D8B). oklch(36.3% 0.11 282.2), rgb(55, 51, 117).
Aa
White text reads best on this color (11.09:1).
About this color
#373375 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.110 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.054 away. White text reads best on it, at 11.09:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.89:1 |
| White text | 11.09:1 |
Values
| HEX | #373375 |
| RGB | rgb(55, 51, 117) |
| HSL | hsl(244, 39%, 33%) |
| OKLCH | oklch(36.3% 0.11 282.2) |
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 #373375 | 11.09:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #373375 | 1.89:1 | Fails | Lc 8.5 | Not readable |
| #373375 text on white | 11.09:1 | AAA | Lc 95.4 | Preferred for body text |
| #373375 text on black | 1.89:1 | 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
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B8BBF5
oklch(81% 0.082 282.1)
-
Step 400
400
#9495F0
oklch(70.7% 0.132 282)
-
Step 500
500
#7C78EB
oklch(63.1% 0.168 282)
-
Step 600
600
#675ED9
oklch(55.7% 0.182 282)
-
Step 700
700
#564CBC
oklch(49% 0.17 282.2)
-
Step 800
800
#463F98
oklch(42.6% 0.141 282.2)
-
Step 900
900 (this color)
#373375
oklch(36.3% 0.11 282.2)
-
Step 950
950
#222147
oklch(27.1% 0.069 282)
#373375 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) | #0E3E77 | 0.050 |
| Deuteranopia (no green cones) | #063974 | 0.052 |
| Tritanopia (no blue cones) | #1F424E | 0.095 |
| Achromatopsia (no color) | #3C3C3C | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373375
#373375
oklch(36.3% 0.11 282.2)
- #463F00
#463F00
oklch(36.3% 0.076 102.4)
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 #373375, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.054
- Twilight Blue #0A437A ΔE 0.058
- Marine Blue #01386A ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.066
- Cobalt #1E488F ΔE 0.070
- Blueberry #464196 ΔE 0.070
- Marine #042E60 ΔE 0.074
- Dark Grey Blue #29465B ΔE 0.081
Use #373375 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.