#5B779D
Closest named color: Stormy Blue (#507B9C). oklch(56.3% 0.068 256.2), rgb(91, 119, 157).
Aa
White text reads best on this color (4.59:1).
About this color
#5B779D is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.068 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.017 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #5B779D |
| RGB | rgb(91, 119, 157) |
| HSL | hsl(215, 27%, 49%) |
| OKLCH | oklch(56.3% 0.068 256.2) |
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 #5B779D | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #5B779D | 4.57:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #5B779D text on white | 4.59:1 | AA | Lc 71.9 | Content text, not long reading |
| #5B779D text on black | 4.57:1 | AA | Lc -29.8 | Dividers and decoration only |
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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D5
oklch(80.9% 0.031 256)
-
Step 400
400
#8DA2BF
oklch(70.6% 0.049 256.5)
-
Step 500
500
#718BAF
oklch(63% 0.062 256.6)
-
Step 600
600 (this color)
#5B779D
oklch(56.3% 0.068 256.2)
-
Step 700
700
#496284
oklch(49.1% 0.063 256.2)
-
Step 800
800
#3C506B
oklch(42.6% 0.052 256.1)
-
Step 900
900
#334357
oklch(37.8% 0.04 254.3)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#5B779D 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) | #69799F | 0.020 |
| Deuteranopia (no green cones) | #61729C | 0.015 |
| Tritanopia (no blue cones) | #437F84 | 0.059 |
| Achromatopsia (no color) | #757575 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B779D
#5B779D
oklch(56.3% 0.068 256.2)
- #8C7047
#8C7047
oklch(56.3% 0.067 76.2)
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 #5B779D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.017
- Dull Blue #49759C ΔE 0.023
- Cerulean #457B9D ΔE 0.025
- Metallic Blue #4F738E ΔE 0.030
- Grey Blue #647D8E ΔE 0.036
- Off Blue #5684AE ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.041
- Muted Blue #3B719F ΔE 0.042
Use #5B779D 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.