#777C91
Closest named color: Slate Gray (#708090). oklch(58.9% 0.033 274.8), rgb(119, 124, 145).
Aa
Black text reads best on this color (5.07:1).
About this color
#777C91 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.033 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.015 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #777C91 |
| RGB | rgb(119, 124, 145) |
| HSL | hsl(228, 11%, 52%) |
| OKLCH | oklch(58.9% 0.033 274.8) |
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 #777C91 | 4.13:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #777C91 | 5.07:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #777C91 text on white | 4.13:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #777C91 text on black | 5.07:1 | AA | Lc -33.2 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAED
oklch(93.7% 0.004 271.4)
-
Step 200
200
#D7D9DF
oklch(88.6% 0.008 271.3)
-
Step 300
300
#BDC0CA
oklch(80.8% 0.014 272.7)
-
Step 400
400
#9CA0B0
oklch(70.8% 0.024 274.6)
-
Step 500
500
#84889C
oklch(63% 0.03 276.5)
-
Step 600
600 (this color)
#777C91
oklch(58.9% 0.033 274.8)
-
Step 700
700
#5B6072
oklch(49.1% 0.029 273)
-
Step 800
800
#4B4E5D
oklch(42.7% 0.025 276.4)
-
Step 900
900
#3E414C
oklch(37.7% 0.019 273.4)
-
Step 950
950
#24262D
oklch(27% 0.013 272.9)
#777C91 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) | #767E92 | 0.005 |
| Deuteranopia (no green cones) | #757C90 | 0.003 |
| Tritanopia (no blue cones) | #718083 | 0.029 |
| Achromatopsia (no color) | #7D7D7D | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #777C91
#777C91
oklch(58.9% 0.033 274.8)
- #837D67
#837D67
oklch(58.9% 0.033 94.5)
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 #777C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.015
- Lavender Gray #7E7F9A ΔE 0.019
- Steel #738595 ΔE 0.025
- Steel Grey #6F828A ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.027
- Grey Blue #647D8E ΔE 0.027
- Light Slate Gray #778899 ΔE 0.033
- Gray #808080 ΔE 0.034
Use #777C91 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.