#5B6BAD
Closest named color: French Blue (#436BAD). oklch(54.5% 0.105 272.2), rgb(91, 107, 173).
Aa
White text reads best on this color (5.05:1).
About this color
#5B6BAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.105 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.029 away. White text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #5B6BAD |
| RGB | rgb(91, 107, 173) |
| HSL | hsl(228, 33%, 52%) |
| OKLCH | oklch(54.5% 0.105 272.2) |
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 #5B6BAD | 5.05:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #5B6BAD | 4.15:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #5B6BAD text on white | 5.05:1 | AA | Lc 74.8 | Content text, not long reading |
| #5B6BAD text on black | 4.15:1 | AA large text | Lc -26.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F3
oklch(93.5% 0.014 272.7)
-
Step 200
200
#D3D8EB
oklch(88.4% 0.027 274.1)
-
Step 300
300
#B6BFE0
oklch(80.8% 0.048 273.3)
-
Step 400
400
#909ED0
oklch(70.7% 0.075 272.3)
-
Step 500
500
#7586C4
oklch(63.2% 0.096 271.7)
-
Step 600
600 (this color)
#5B6BAD
oklch(54.5% 0.105 272.2)
-
Step 700
700
#4E5C98
oklch(49.1% 0.098 272.4)
-
Step 800
800
#404B7B
oklch(42.6% 0.081 272.8)
-
Step 900
900
#363F63
oklch(37.7% 0.063 272.4)
-
Step 950
950
#20253A
oklch(27% 0.04 273.2)
#5B6BAD 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) | #5272B0 | 0.021 |
| Deuteranopia (no green cones) | #4B6BAC | 0.020 |
| Tritanopia (no blue cones) | #3C7984 | 0.094 |
| Achromatopsia (no color) | #6F6F6F | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6BAD
#5B6BAD
oklch(54.5% 0.105 272.2)
- #866D14
#866D14
oklch(54.4% 0.105 91.7)
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 #5B6BAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.041
- Muted Blue #3B719F ΔE 0.047
- Dull Blue #49759C ΔE 0.048
- Windows Blue #3778BF ΔE 0.050
- Mid Blue #276AB3 ΔE 0.054
- Dusky Blue #475F94 ΔE 0.057
- Stormy Blue #507B9C ΔE 0.060
Use #5B6BAD 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.