#373151
Closest named color: Space Cadet (#2B2D42). oklch(33.5% 0.056 291.7), rgb(55, 49, 81).
Aa
White text reads best on this color (12.20:1).
About this color
#373151 is a dark, muted purple. In OKLCH its lightness is 33%, its chroma 0.056 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.036 away. White text reads best on it, at 12.20:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.72:1 |
| White text | 12.20:1 |
Values
| HEX | #373151 |
| RGB | rgb(55, 49, 81) |
| HSL | hsl(251, 25%, 25%) |
| OKLCH | oklch(33.5% 0.056 291.7) |
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 #373151 | 12.20:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #373151 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #373151 text on white | 12.20:1 | AAA | Lc 97.8 | Preferred for body text |
| #373151 text on black | 1.72:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE9F2
oklch(93.7% 0.012 291.3)
-
Step 200
200
#D9D7E8
oklch(88.6% 0.023 291.3)
-
Step 300
300
#C0BCDA
oklch(80.8% 0.042 291.5)
-
Step 400
400
#A19AC8
oklch(70.8% 0.067 291.6)
-
Step 500
500
#8A80B9
oklch(63.1% 0.085 291.8)
-
Step 600
600
#7469A5
oklch(55.6% 0.092 291.5)
-
Step 700
700
#62578E
oklch(49.1% 0.087 292.1)
-
Step 800
800
#504773
oklch(42.6% 0.072 292.5)
-
Step 900
900 (this color)
#373151
oklch(33.5% 0.056 291.7)
-
Step 950
950
#272336
oklch(27% 0.035 293.6)
#373151 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) | #283652 | 0.027 |
| Deuteranopia (no green cones) | #293550 | 0.025 |
| Tritanopia (no blue cones) | #31373D | 0.047 |
| Achromatopsia (no color) | #353535 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373151
#373151
oklch(33.5% 0.056 291.7)
- #373914
#373914
oklch(33.3% 0.056 111.9)
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 #373151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.039
- Gunmetal #293241 ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.047
- Onyx #343A40 ΔE 0.048
- Midnight Green #073B4C ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.065
- Charcoal Grey #3C4142 ΔE 0.066
Use #373151 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.