#78788B
Closest named color: Slate Gray (#708090). oklch(57.9% 0.029 285.5), rgb(120, 120, 139).
Aa
Black text reads best on this color (4.85:1).
About this color
#78788B is a medium-dark close to neutral grey. In OKLCH its lightness is 58%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Slate Gray (#708090), ΔE 0.023 away. Black text reads best on it, at 4.85:1.
| Hue family | Neutrals |
| Lightness | medium-dark (58%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Slate Gray (#708090) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #78788B |
| RGB | rgb(120, 120, 139) |
| HSL | hsl(240, 8%, 51%) |
| OKLCH | oklch(57.9% 0.029 285.5) |
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 #78788B | 4.32:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #78788B | 4.85:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #78788B text on white | 4.32:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #78788B text on black | 4.85:1 | AA | Lc -31.7 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E9E9EC
oklch(93.5% 0.004 286.3)
-
Step 200
200
#D8D8DE
oklch(88.4% 0.008 286.2)
-
Step 300
300
#BFC0C9
oklch(81% 0.013 281)
-
Step 400
400
#9F9FAD
oklch(70.7% 0.02 285.9)
-
Step 500
500
#878799
oklch(62.9% 0.027 285.6)
-
Step 600
600 (this color)
#78788B
oklch(57.9% 0.029 285.5)
-
Step 700
700
#5F5F70
oklch(49.2% 0.027 285.4)
-
Step 800
800
#4D4D5B
oklch(42.6% 0.023 285.4)
-
Step 900
900
#40404B
oklch(37.6% 0.019 285.5)
-
Step 950
950
#26262C
oklch(27.1% 0.011 285.6)
#78788B 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) | #747A8C | 0.007 |
| Deuteranopia (no green cones) | #73798A | 0.008 |
| Tritanopia (no blue cones) | #747B7E | 0.026 |
| Achromatopsia (no color) | #797979 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #78788B
#78788B
oklch(57.9% 0.029 285.5)
- #7C7B68
#7C7B68
oklch(57.8% 0.028 104.8)
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 #78788B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.023
- Battleship Grey #6B7C85 ΔE 0.025
- Lavender Gray #7E7F9A ΔE 0.029
- Grey Blue #647D8E ΔE 0.029
- Battleship Gray #6C757D ΔE 0.029
- Purple Grey #866F85 ΔE 0.030
- Steel Grey #6F828A ΔE 0.031
- Grey Purple #826D8C ΔE 0.034
Use #78788B 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.