#5B61AC
Closest named color: French Blue (#436BAD). oklch(52.3% 0.117 278.1), rgb(91, 97, 172).
Aa
White text reads best on this color (5.59:1).
About this color
#5B61AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.117 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.037 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #5B61AC |
| RGB | rgb(91, 97, 172) |
| HSL | hsl(236, 33%, 52%) |
| OKLCH | oklch(52.3% 0.117 278.1) |
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 #5B61AC | 5.59:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #5B61AC | 3.75:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #5B61AC text on white | 5.59:1 | AA | Lc 77.9 | Fine for body text |
| #5B61AC text on black | 3.75:1 | AA large text | Lc -23.9 | 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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8EE
oklch(88.6% 0.03 277.6)
-
Step 300
300
#B7BEE6
oklch(80.9% 0.057 277.3)
-
Step 400
400
#939BD9
oklch(70.7% 0.091 278.1)
-
Step 500
500
#7981CF
oklch(63% 0.117 278)
-
Step 600
600
#636ABC
oklch(55.7% 0.126 277.8)
-
Step 700
700 (this color)
#5B61AC
oklch(52.3% 0.117 278.1)
-
Step 800
800
#434883
oklch(42.7% 0.097 277.8)
-
Step 900
900
#393D69
oklch(37.8% 0.075 278.2)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#5B61AC 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) | #446BAF | 0.036 |
| Deuteranopia (no green cones) | #3D65AA | 0.038 |
| Tritanopia (no blue cones) | #3E717E | 0.104 |
| Achromatopsia (no color) | #686868 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B61AC
#5B61AC
oklch(52.3% 0.117 278.1)
- #7B6A00
#7B6A00
oklch(52.5% 0.108 98.1)
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 #5B61AC, closest first.
No curated palette has a color within ΔE 0.04 of #5B61AC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.037
- Iris #6258C4 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.048
- Mid Blue #276AB3 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.059
- Slate Blue #6A5ACD ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.061
- Muted Blue #3B719F ΔE 0.063
Use #5B61AC 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.