#837578
Closest named color: Medium Grey (#7D7F7C). oklch(57.6% 0.018 3.1), rgb(131, 117, 120).
Aa
Black text reads best on this color (4.78:1).
About this color
#837578 is a medium-dark close to neutral grey. In OKLCH its lightness is 58%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Medium Grey (#7D7F7C), ΔE 0.028 away. Black text reads best on it, at 4.78:1.
| Hue family | Neutrals |
| Lightness | medium-dark (58%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Medium Grey (#7D7F7C) |
| Black text | 4.78:1 |
| White text | 4.39:1 |
Values
| HEX | #837578 |
| RGB | rgb(131, 117, 120) |
| HSL | hsl(347, 6%, 49%) |
| OKLCH | oklch(57.6% 0.018 3.1) |
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 #837578 | 4.39:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #837578 | 4.78:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #837578 text on white | 4.39:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #837578 text on black | 4.78:1 | AA | Lc -31.2 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#EBE9EA
oklch(93.6% 0.003 345.2)
-
Step 200
200
#DCD8D9
oklch(88.6% 0.005 0)
-
Step 300
300
#C5BEC0
oklch(80.8% 0.008 357.9)
-
Step 400
400
#A89DA0
oklch(70.6% 0.014 358.9)
-
Step 500
500
#938688
oklch(63.2% 0.016 7)
-
Step 600
600 (this color)
#837578
oklch(57.6% 0.018 3.1)
-
Step 700
700
#695D60
oklch(49.1% 0.016 0.8)
-
Step 800
800
#564C4E
oklch(42.7% 0.014 4)
-
Step 900
900
#473F41
oklch(37.7% 0.011 0.7)
-
Step 950
950
#292526
oklch(26.9% 0.006 0.5)
#837578 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) | #777778 | 0.019 |
| Deuteranopia (no green cones) | #7A7978 | 0.017 |
| Tritanopia (no blue cones) | #867476 | 0.005 |
| Achromatopsia (no color) | #787878 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #837578
#837578
oklch(57.6% 0.018 3.1)
- #6E7D7A
#6E7D7A
oklch(57.6% 0.018 182.3)
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 #837578, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Grey #7D7F7C ΔE 0.028
- Gray #808080 ΔE 0.030
- Purple Grey #866F85 ΔE 0.031
- Battleship Gray #6C757D ΔE 0.035
- Reddish Grey #997570 ΔE 0.037
- Battleship Grey #6B7C85 ΔE 0.039
- Steel Grey #6F828A ΔE 0.044
- Grey Purple #826D8C ΔE 0.044
Use #837578 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.