#313C36
Closest named color: Onyx (#343A40). oklch(34.4% 0.018 161.5), rgb(49, 60, 54).
Aa
White text reads best on this color (11.47:1).
About this color
#313C36 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.022 away. White text reads best on it, at 11.47:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.83:1 |
| White text | 11.47:1 |
Values
| HEX | #313C36 |
| RGB | rgb(49, 60, 54) |
| HSL | hsl(147, 10%, 21%) |
| OKLCH | oklch(34.4% 0.018 161.5) |
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 #313C36 | 11.47:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #313C36 | 1.83:1 | Fails | Lc 7.4 | Not readable |
| #313C36 text on white | 11.47:1 | AAA | Lc 96.4 | Preferred for body text |
| #313C36 text on black | 1.83:1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E8EBE9
oklch(93.7% 0.004 157.2)
-
Step 200
200
#D5DBD7
oklch(88.6% 0.008 157.1)
-
Step 300
300
#B9C3BE
oklch(80.8% 0.013 164.7)
-
Step 400
400
#95A59C
oklch(70.7% 0.022 161.2)
-
Step 500
500
#7B8F84
oklch(63.1% 0.028 161.5)
-
Step 600
600
#64796E
oklch(55.6% 0.03 162.5)
-
Step 700
700
#53665C
oklch(49.1% 0.028 162.3)
-
Step 800
800
#44534B
oklch(42.7% 0.023 162)
-
Step 900
900 (this color)
#313C36
oklch(34.4% 0.018 161.5)
-
Step 950
950
#222825
oklch(27% 0.01 164.1)
#313C36 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) | #3C3A36 | 0.018 |
| Deuteranopia (no green cones) | #3A3936 | 0.017 |
| Tritanopia (no blue cones) | #2F3C3A | 0.007 |
| Achromatopsia (no color) | #393939 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313C36
#313C36
oklch(34.4% 0.018 161.5)
- #40353C
#40353C
oklch(34.3% 0.019 339.7)
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 #313C36, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.022
- Charcoal Grey #3C4142 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.046
- Gunmetal #293241 ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Pakistan Green #283618 ΔE 0.050
- Midnight Green #073B4C ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.062
Use #313C36 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.