#373263
Closest named color: Prussian Blue (#1D3557). oklch(34.8% 0.083 285.9), rgb(55, 50, 99).
Aa
White text reads best on this color (11.67:1).
About this color
#373263 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.083 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.045 away. White text reads best on it, at 11.67:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.79:1 |
| White text | 11.67:1 |
Values
| HEX | #373263 |
| RGB | rgb(55, 50, 99) |
| HSL | hsl(246, 33%, 29%) |
| OKLCH | oklch(34.8% 0.083 285.9) |
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 #373263 | 11.67:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #373263 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #373263 text on white | 11.67:1 | AAA | Lc 96.7 | Preferred for body text |
| #373263 text on black | 1.79:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D6D6F0
oklch(88.4% 0.036 285.7)
-
Step 300
300
#BCBBE8
oklch(80.8% 0.063 285.9)
-
Step 400
400
#9B97DC
oklch(70.6% 0.1 286.2)
-
Step 500
500
#837CD3
oklch(63% 0.129 285.8)
-
Step 600
600
#6E64C0
oklch(55.6% 0.139 285.9)
-
Step 700
700
#5C52A6
oklch(49% 0.13 286)
-
Step 800
800
#4B4486
oklch(42.7% 0.106 285.8)
-
Step 900
900 (this color)
#373263
oklch(34.8% 0.083 285.9)
-
Step 950
950
#24223F
oklch(27% 0.053 285.4)
#373263 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) | #1F3A65 | 0.038 |
| Deuteranopia (no green cones) | #1E3762 | 0.037 |
| Tritanopia (no blue cones) | #2A3C45 | 0.072 |
| Achromatopsia (no color) | #383838 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373263
#373263
oklch(34.8% 0.083 285.9)
- #3F3C00
#3F3C00
oklch(34.8% 0.074 106.5)
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 #373263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.045
- Marine Blue #01386A ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.063
- Marine #042E60 ΔE 0.064
- Gunmetal #293241 ΔE 0.067
- Dark Grey Blue #29465B ΔE 0.068
- Twilight Blue #0A437A ΔE 0.068
Use #373263 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.