#5B759D
Closest named color: Stormy Blue (#507B9C). oklch(55.8% 0.07 258.8), rgb(91, 117, 157).
Aa
White text reads best on this color (4.69:1).
About this color
#5B759D is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.070 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.021 away. White text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #5B759D |
| RGB | rgb(91, 117, 157) |
| HSL | hsl(216, 27%, 49%) |
| OKLCH | oklch(55.8% 0.07 258.8) |
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 #5B759D | 4.69:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #5B759D | 4.47:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #5B759D text on white | 4.69:1 | AA | Lc 72.5 | Content text, not long reading |
| #5B759D text on black | 4.47:1 | AA large text | Lc -29.2 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B5C2D5
oklch(81% 0.03 257.8)
-
Step 400
400
#8EA2C0
oklch(70.7% 0.05 258.4)
-
Step 500
500
#728BB1
oklch(63.2% 0.064 258.6)
-
Step 600
600 (this color)
#5B759D
oklch(55.8% 0.07 258.8)
-
Step 700
700
#4A6286
oklch(49.2% 0.065 258.3)
-
Step 800
800
#3D506C
oklch(42.8% 0.053 257.9)
-
Step 900
900
#344258
oklch(37.6% 0.042 259.3)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#5B759D 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) | #66779F | 0.016 |
| Deuteranopia (no green cones) | #5F719C | 0.012 |
| Tritanopia (no blue cones) | #447E83 | 0.062 |
| Achromatopsia (no color) | #747474 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B759D
#5B759D
oklch(55.8% 0.07 258.8)
- #8A6F43
#8A6F43
oklch(55.8% 0.07 78.8)
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 #5B759D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.021
- Dull Blue #49759C ΔE 0.021
- Cerulean #457B9D ΔE 0.028
- Metallic Blue #4F738E ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.039
- Muted Blue #3B719F ΔE 0.039
- Grey Blue #647D8E ΔE 0.040
- Off Blue #5684AE ΔE 0.044
Use #5B759D 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.