#778F91
Closest named color: Light Slate Gray (#778899). oklch(63.2% 0.027 202.7), rgb(119, 143, 145).
Aa
Black text reads best on this color (6.12:1).
About this color
#778F91 is a medium-light close to neutral grey. In OKLCH its lightness is 63%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Light Slate Gray (#778899), ΔE 0.027 away. Black text reads best on it, at 6.12:1.
| Hue family | Neutrals |
| Lightness | medium-light (63%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 6.12:1 |
| White text | 3.43:1 |
Values
| HEX | #778F91 |
| RGB | rgb(119, 143, 145) |
| HSL | hsl(185, 11%, 52%) |
| OKLCH | oklch(63.2% 0.027 202.7) |
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 #778F91 | 3.43:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #778F91 | 6.12:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #778F91 text on white | 3.43:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #778F91 text on black | 6.12:1 | AA | Lc -39.9 | 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 500.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D4DBDB
oklch(88.6% 0.008 197)
-
Step 300
300
#B7C3C4
oklch(80.8% 0.013 202.9)
-
Step 400
400
#92A5A6
oklch(70.7% 0.021 200.5)
-
Step 500
500 (this color)
#778F91
oklch(63.2% 0.027 202.7)
-
Step 600
600
#5F797B
oklch(55.6% 0.03 202.1)
-
Step 700
700
#4E6668
oklch(49.2% 0.029 202.6)
-
Step 800
800
#405354
oklch(42.7% 0.024 200.3)
-
Step 900
900
#374546
oklch(37.9% 0.018 201.8)
-
Step 950
950
#202829
oklch(27% 0.011 205.8)
#778F91 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) | #8B8D91 | 0.027 |
| Deuteranopia (no green cones) | #868991 | 0.025 |
| Tritanopia (no blue cones) | #6F9190 | 0.012 |
| Achromatopsia (no color) | #8A8A8A | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #778F91
#778F91
oklch(63.2% 0.027 202.7)
- #9A8482
#9A8482
oklch(63.3% 0.027 24)
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 #778F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.027
- Blue Grey #758DA3 ΔE 0.030
- Steel #738595 ΔE 0.033
- Silver Lake Blue #778DA9 ΔE 0.039
- Steel Grey #6F828A ΔE 0.039
- Gray #808080 ΔE 0.042
- Cadet Blue #5F9EA0 ΔE 0.046
- Slate Gray #708090 ΔE 0.046
Use #778F91 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.