#313D30
Closest named color: Onyx (#343A40). oklch(34.5% 0.027 142.9), rgb(49, 61, 48).
Aa
White text reads best on this color (11.40:1).
About this color
#313D30 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.033 away. White text reads best on it, at 11.40:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.40:1 |
Values
| HEX | #313D30 |
| RGB | rgb(49, 61, 48) |
| HSL | hsl(115, 12%, 21%) |
| OKLCH | oklch(34.5% 0.027 142.9) |
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 #313D30 | 11.40:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #313D30 | 1.84:1 | Fails | Lc 7.6 | Not readable |
| #313D30 text on white | 11.40:1 | AAA | Lc 96.3 | Preferred for body text |
| #313D30 text on black | 1.84:1 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE7
oklch(93.7% 0.006 137.8)
-
Step 200
200
#D5DBD4
oklch(88.5% 0.011 141.3)
-
Step 300
300
#B9C4B8
oklch(80.8% 0.021 143)
-
Step 400
400
#95A694
oklch(70.7% 0.032 143.7)
-
Step 500
500
#7B9079
oklch(63% 0.042 142.7)
-
Step 600
600
#647B62
oklch(55.7% 0.047 142.8)
-
Step 700
700
#536751
oklch(49.1% 0.042 142.5)
-
Step 800
800
#445443
oklch(42.7% 0.034 143.4)
-
Step 900
900 (this color)
#313D30
oklch(34.5% 0.027 142.9)
-
Step 950
950
#222921
oklch(27.1% 0.018 141.6)
#313D30 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) | #3E3B2F | 0.021 |
| Deuteranopia (no green cones) | #3C3931 | 0.022 |
| Tritanopia (no blue cones) | #303C39 | 0.017 |
| Achromatopsia (no color) | #3A3A3A | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313D30
#313D30
oklch(34.5% 0.027 142.9)
- #403542
#403542
oklch(34.6% 0.027 321.1)
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 #313D30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.037
- Pakistan Green #283618 ΔE 0.043
- Evergreen #05472A ΔE 0.054
- Dark Olive #373E02 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.057
- Gunmetal #293241 ΔE 0.057
- Charcoal #264653 ΔE 0.058
Use #313D30 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.