#373376
Closest named color: Dark Slate Blue (#483D8B). oklch(36.4% 0.111 282), rgb(55, 51, 118).
Aa
White text reads best on this color (11.06:1).
About this color
#373376 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.111 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.053 away. White text reads best on it, at 11.06:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.89:1 |
| White text | 11.06:1 |
Values
| HEX | #373376 |
| RGB | rgb(55, 51, 118) |
| HSL | hsl(244, 40%, 33%) |
| OKLCH | oklch(36.4% 0.111 282) |
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 #373376 | 11.06:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #373376 | 1.89:1 | Fails | Lc 8.6 | Not readable |
| #373376 text on white | 11.06:1 | AAA | Lc 95.3 | Preferred for body text |
| #373376 text on black | 1.89:1 | Fails | Lc -7.3 | 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
#D4D6F8
oklch(88.5% 0.047 282.7)
-
Step 300
300
#B7BBF6
oklch(81% 0.083 281.3)
-
Step 400
400
#9495F1
oklch(70.7% 0.133 282)
-
Step 500
500
#7C78EC
oklch(63.2% 0.17 281.9)
-
Step 600
600
#675DDA
oklch(55.6% 0.185 282.2)
-
Step 700
700
#564CBE
oklch(49.2% 0.173 282)
-
Step 800
800
#463F99
oklch(42.7% 0.142 282.1)
-
Step 900
900 (this color)
#373376
oklch(36.4% 0.111 282)
-
Step 950
950
#222147
oklch(27.1% 0.069 282)
#373376 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) | #0C3E78 | 0.051 |
| Deuteranopia (no green cones) | #043975 | 0.053 |
| Tritanopia (no blue cones) | #1E424F | 0.095 |
| Achromatopsia (no color) | #3C3C3C | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373376
#373376
oklch(36.4% 0.111 282)
- #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 #373376, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Twilight Blue #0A437A ΔE 0.058
- Marine Blue #01386A ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.068
- Blueberry #464196 ΔE 0.069
- Cobalt #1E488F ΔE 0.069
- Marine #042E60 ΔE 0.075
- Dark Grey Blue #29465B ΔE 0.082
Use #373376 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.