#778C9B
Closest named color: Light Slate Gray (#778899). oklch(62.9% 0.033 239.2), rgb(119, 140, 155).
Aa
Black text reads best on this color (6.00:1).
About this color
#778C9B is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.033 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.011 away. Black text reads best on it, at 6.00:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 6.00:1 |
| White text | 3.49:1 |
Values
| HEX | #778C9B |
| RGB | rgb(119, 140, 155) |
| HSL | hsl(205, 15%, 54%) |
| OKLCH | oklch(62.9% 0.033 239.2) |
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 #778C9B | 3.49:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #778C9B | 6.00:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #778C9B text on white | 3.49:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #778C9B text on black | 6.00:1 | AA | Lc -39.2 | 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 500.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B8C2CA
oklch(80.9% 0.016 241.8)
-
Step 400
400
#92A3AF
oklch(70.6% 0.026 238.6)
-
Step 500
500 (this color)
#778C9B
oklch(62.9% 0.033 239.2)
-
Step 600
600
#607786
oklch(55.6% 0.036 236.9)
-
Step 700
700
#506472
oklch(49.2% 0.033 238.9)
-
Step 800
800
#41515D
oklch(42.6% 0.028 240.7)
-
Step 900
900
#37434C
oklch(37.6% 0.022 240.6)
-
Step 950
950
#20272C
oklch(26.8% 0.014 239.1)
#778C9B 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) | #868B9C | 0.021 |
| Deuteranopia (no green cones) | #81879B | 0.019 |
| Tritanopia (no blue cones) | #6D9091 | 0.026 |
| Achromatopsia (no color) | #898989 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #778C9B
#778C9B
oklch(62.9% 0.033 239.2)
- #988475
#988475
oklch(62.7% 0.033 59)
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 #778C9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.011
- Blue Grey #758DA3 ΔE 0.012
- Silver Lake Blue #778DA9 ΔE 0.021
- Steel #738595 ΔE 0.021
- Steel Grey #6F828A ΔE 0.036
- Slate Gray #708090 ΔE 0.037
- Lavender Gray #7E7F9A ΔE 0.037
- Gray #808080 ΔE 0.044
Use #778C9B 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.