#37464C
Closest named color: Charcoal Grey (#3C4142). oklch(38.3% 0.022 224.2), rgb(55, 70, 76).
Aa
White text reads best on this color (9.79:1).
About this color
#37464C is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.020 away. White text reads best on it, at 9.79:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.14:1 |
| White text | 9.79:1 |
Values
| HEX | #37464C |
| RGB | rgb(55, 70, 76) |
| HSL | hsl(197, 16%, 26%) |
| OKLCH | oklch(38.3% 0.022 224.2) |
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 #37464C | 9.79:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #37464C | 2.14:1 | Fails | Lc 11.2 | Not readable |
| #37464C text on white | 9.79:1 | AAA | Lc 92.7 | Preferred for body text |
| #37464C text on black | 2.14:1 | Fails | Lc -9.7 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3C8
oklch(80.9% 0.016 222.7)
-
Step 400
400
#90A4AD
oklch(70.6% 0.026 226.6)
-
Step 500
500
#748E99
oklch(63% 0.034 225.4)
-
Step 600
600
#5D7883
oklch(55.6% 0.036 224.7)
-
Step 700
700
#4C656F
oklch(49.1% 0.034 224.4)
-
Step 800
800
#3F535A
oklch(42.8% 0.027 221.3)
-
Step 900
900 (this color)
#37464C
oklch(38.3% 0.022 224.2)
-
Step 950
950
#1F282B
oklch(26.9% 0.014 220.1)
#37464C 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) | #43454C | 0.018 |
| Deuteranopia (no green cones) | #3F434C | 0.015 |
| Tritanopia (no blue cones) | #314848 | 0.014 |
| Achromatopsia (no color) | #444444 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37464C
#37464C
oklch(38.3% 0.022 224.2)
- #4E403A
#4E403A
oklch(38.4% 0.022 44.5)
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 #37464C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.020
- Charcoal #264653 ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.030
- Onyx #343A40 ΔE 0.040
- Dark Teal #014D4E ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.052
- Deep Teal #00555A ΔE 0.056
Use #37464C 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.