#5B68B2
Closest named color: French Blue (#436BAD). oklch(54.1% 0.116 274.3), rgb(91, 104, 178).
Aa
White text reads best on this color (5.16:1).
About this color
#5B68B2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.116 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.031 away. White text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.06:1 |
| White text | 5.16:1 |
Values
| HEX | #5B68B2 |
| RGB | rgb(91, 104, 178) |
| HSL | hsl(231, 36%, 53%) |
| OKLCH | oklch(54.1% 0.116 274.3) |
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 #5B68B2 | 5.16:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #5B68B2 | 4.06:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #5B68B2 text on white | 5.16:1 | AA | Lc 75.4 | Fine for body text |
| #5B68B2 text on black | 4.06:1 | AA large text | Lc -26.3 | 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
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE3
oklch(81% 0.052 274.2)
-
Step 400
400
#909DD5
oklch(70.7% 0.083 274)
-
Step 500
500
#7684CA
oklch(63.1% 0.107 274.3)
-
Step 600
600 (this color)
#5B68B2
oklch(54.1% 0.116 274.3)
-
Step 700
700
#4F5A9D
oklch(49.1% 0.108 274.7)
-
Step 800
800
#404A80
oklch(42.7% 0.09 274)
-
Step 900
900
#363E66
oklch(37.6% 0.069 274)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#5B68B2 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) | #4B71B5 | 0.029 |
| Deuteranopia (no green cones) | #436AB0 | 0.029 |
| Tritanopia (no blue cones) | #397884 | 0.104 |
| Achromatopsia (no color) | #6D6D6D | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B68B2
#5B68B2
oklch(54.1% 0.116 274.3)
- #846D00
#846D00
oklch(54.1% 0.111 94.3)
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 #5B68B2, closest first.
No curated palette has a color within ΔE 0.04 of #5B68B2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.049
- Mid Blue #276AB3 ΔE 0.053
- Windows Blue #3778BF ΔE 0.053
- Iris #6258C4 ΔE 0.053
- Muted Blue #3B719F ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.058
- Dusky Blue #475F94 ΔE 0.059
Use #5B68B2 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.