#31474E
Closest named color: Charcoal (#264653). oklch(38.3% 0.03 219.6), rgb(49, 71, 78).
Aa
White text reads best on this color (9.80:1).
About this color
#31474E is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Charcoal (#264653), ΔE 0.016 away. White text reads best on it, at 9.80:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Charcoal (#264653) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #31474E |
| RGB | rgb(49, 71, 78) |
| HSL | hsl(194, 23%, 25%) |
| OKLCH | oklch(38.3% 0.03 219.6) |
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 #31474E | 9.80:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #31474E | 2.14:1 | Fails | Lc 11.2 | Not readable |
| #31474E text on white | 9.80:1 | AAA | Lc 92.7 | Preferred for body text |
| #31474E 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D1DBDF
oklch(88.5% 0.012 223.5)
-
Step 300
300
#B2C4CB
oklch(80.9% 0.022 223.1)
-
Step 400
400
#89A6B0
oklch(70.7% 0.035 220.7)
-
Step 500
500
#6B909D
oklch(63% 0.045 221.5)
-
Step 600
600
#527B87
oklch(55.7% 0.049 218.1)
-
Step 700
700
#426773
oklch(49.1% 0.046 220.4)
-
Step 800
800
#37545D
oklch(42.7% 0.038 219.3)
-
Step 900
900 (this color)
#31474E
oklch(38.3% 0.03 219.6)
-
Step 950
950
#1C292D
oklch(27.1% 0.019 218.7)
#31474E 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) | #43464E | 0.026 |
| Deuteranopia (no green cones) | #3E424E | 0.023 |
| Tritanopia (no blue cones) | #274949 | 0.018 |
| Achromatopsia (no color) | #444444 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31474E
#31474E
oklch(38.3% 0.03 219.6)
- #513E37
#513E37
oklch(38.2% 0.029 41.2)
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 #31474E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.016
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal Grey #3C4142 ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Teal #014D4E ΔE 0.039
- Onyx #343A40 ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.048
- Deep Teal #00555A ΔE 0.050
Use #31474E 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.