#372F3F
Closest named color: Space Cadet (#2B2D42). oklch(32% 0.03 307.4), rgb(55, 47, 63).
Aa
White text reads best on this color (12.79:1).
About this color
#372F3F is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.024 away. White text reads best on it, at 12.79:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.64:1 |
| White text | 12.79:1 |
Values
| HEX | #372F3F |
| RGB | rgb(55, 47, 63) |
| HSL | hsl(270, 15%, 22%) |
| OKLCH | oklch(32% 0.03 307.4) |
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 #372F3F | 12.79:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #372F3F | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #372F3F text on white | 12.79:1 | AAA | Lc 98.9 | Preferred for body text |
| #372F3F text on black | 1.64:1 | 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 950.
-
Step 50
50
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DCD6E3
oklch(88.5% 0.019 306.6)
-
Step 300
300
#C7BBD3
oklch(80.9% 0.036 308)
-
Step 400
400
#AA98BD
oklch(70.8% 0.057 307)
-
Step 500
500
#957EAC
oklch(63.1% 0.072 307.2)
-
Step 600
600
#806797
oklch(55.6% 0.078 307.8)
-
Step 700
700
#6C5581
oklch(49% 0.074 307.8)
-
Step 800
800
#584669
oklch(42.7% 0.061 307.5)
-
Step 900
900
#483B55
oklch(37.7% 0.046 307.1)
-
Step 950
950 (this color)
#372F3F
oklch(32% 0.03 307.4)
#372F3F 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) | #2C3240 | 0.020 |
| Deuteranopia (no green cones) | #2E323E | 0.018 |
| Tritanopia (no blue cones) | #363134 | 0.023 |
| Achromatopsia (no color) | #323232 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #372F3F
#372F3F
oklch(32% 0.03 307.4)
- #2F3625
#2F3625
oklch(32.1% 0.03 126.2)
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 #372F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.024
- Gunmetal #293241 ΔE 0.024
- Onyx #343A40 ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.060
- Midnight Green #073B4C ΔE 0.062
Use #372F3F 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.