#5C819B
Closest named color: Grey Blue (#647D8E). oklch(58.6% 0.058 239.6), rgb(92, 129, 155).
Aa
Black text reads best on this color (5.06:1).
About this color
#5C819B is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.058 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.021 away. Black text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #5C819B |
| RGB | rgb(92, 129, 155) |
| HSL | hsl(205, 26%, 48%) |
| OKLCH | oklch(58.6% 0.058 239.6) |
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 #5C819B | 4.14:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #5C819B | 5.06:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #5C819B text on white | 4.14:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #5C819B text on black | 5.06:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3D0
oklch(80.8% 0.026 240.7)
-
Step 400
400
#8AA5B8
oklch(70.8% 0.041 238.8)
-
Step 500
500
#6C8EA7
oklch(63% 0.054 240.5)
-
Step 600
600 (this color)
#5C819B
oklch(58.6% 0.058 239.6)
-
Step 700
700
#44657C
oklch(49.1% 0.053 239.6)
-
Step 800
800
#385265
oklch(42.6% 0.045 240.8)
-
Step 900
900
#314452
oklch(37.6% 0.034 240.7)
-
Step 950
950
#1D2830
oklch(27% 0.021 240.1)
#5C819B 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) | #76809C | 0.034 |
| Deuteranopia (no green cones) | #6D7A9B | 0.028 |
| Tritanopia (no blue cones) | #458889 | 0.047 |
| Achromatopsia (no color) | #7D7D7D | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C819B
#5C819B
oklch(58.6% 0.058 239.6)
- #967459
#967459
oklch(58.5% 0.058 59.8)
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 #5C819B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.021
- Stormy Blue #507B9C ΔE 0.024
- Dusty Blue #5A86AD ΔE 0.028
- Slate Gray #708090 ΔE 0.028
- Off Blue #5684AE ΔE 0.028
- Cerulean #457B9D ΔE 0.033
- Steel #738595 ΔE 0.034
- Steel Grey #6F828A ΔE 0.035
Use #5C819B 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.