#31363D
Closest named color: Onyx (#343A40). oklch(33.1% 0.014 256.8), rgb(49, 54, 61).
Aa
White text reads best on this color (12.16:1).
About this color
#31363D is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.014. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.014 away. White text reads best on it, at 12.16:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.72:1 |
| White text | 12.16:1 |
Values
| HEX | #31363D |
| RGB | rgb(49, 54, 61) |
| HSL | hsl(215, 11%, 22%) |
| OKLCH | oklch(33.1% 0.014 256.8) |
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 #31363D | 12.16:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #31363D | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #31363D text on white | 12.16:1 | AAA | Lc 97.8 | Preferred for body text |
| #31363D 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D7D9DD
oklch(88.5% 0.006 264.5)
-
Step 300
300
#BCC1C8
oklch(80.9% 0.011 256.7)
-
Step 400
400
#9AA1AB
oklch(70.7% 0.017 257.2)
-
Step 500
500
#818A97
oklch(63% 0.022 257.5)
-
Step 600
600
#6B7481
oklch(55.6% 0.023 257.5)
-
Step 700
700
#59616D
oklch(49% 0.022 258.4)
-
Step 800
800
#495059
oklch(42.8% 0.017 254.7)
-
Step 900
900 (this color)
#31363D
oklch(33.1% 0.014 256.8)
-
Step 950
950
#24272B
oklch(27.1% 0.009 255.6)
#31363D 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) | #34363D | 0.005 |
| Deuteranopia (no green cones) | #32353D | 0.004 |
| Tritanopia (no blue cones) | #2E3738 | 0.012 |
| Achromatopsia (no color) | #363636 | 0.014 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #31363D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.014
- Gunmetal #293241 ΔE 0.022
- Dark Blue Grey #1F3B4D ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.041
- Midnight Green #073B4C ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.054
- Charcoal #264653 ΔE 0.055
Use #31363D 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.