#5B6BB2
Closest named color: French Blue (#436BAD). oklch(54.7% 0.112 272.6), rgb(91, 107, 178).
Aa
White text reads best on this color (5.01:1).
About this color
#5B6BB2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.112 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.030 away. White text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.19:1 |
| White text | 5.01:1 |
Values
| HEX | #5B6BB2 |
| RGB | rgb(91, 107, 178) |
| HSL | hsl(229, 36%, 53%) |
| OKLCH | oklch(54.7% 0.112 272.6) |
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 #5B6BB2 | 5.01:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #5B6BB2 | 4.19:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #5B6BB2 text on white | 5.01:1 | AA | Lc 74.5 | Content text, not long reading |
| #5B6BB2 text on black | 4.19:1 | AA large text | Lc -27.2 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D8EC
oklch(88.4% 0.028 272.5)
-
Step 300
300
#B5BFE2
oklch(80.8% 0.051 272.7)
-
Step 400
400
#8F9ED4
oklch(70.8% 0.081 272.2)
-
Step 500
500
#7485C8
oklch(63.1% 0.103 272.3)
-
Step 600
600 (this color)
#5B6BB2
oklch(54.7% 0.112 272.6)
-
Step 700
700
#4D5B9C
oklch(49.1% 0.105 272.8)
-
Step 800
800
#3F4B7E
oklch(42.7% 0.086 272.3)
-
Step 900
900
#353F65
oklch(37.7% 0.067 271.7)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#5B6BB2 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) | #5073B5 | 0.024 |
| Deuteranopia (no green cones) | #476CB0 | 0.025 |
| Tritanopia (no blue cones) | #397A86 | 0.100 |
| Achromatopsia (no color) | #6F6F6F | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B6BB2
#5B6BB2
oklch(54.7% 0.112 272.6)
- #886E00
#886E00
oklch(54.8% 0.112 92.4)
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 #5B6BB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.044
- Windows Blue #3778BF ΔE 0.048
- Muted Blue #3B719F ΔE 0.052
- Mid Blue #276AB3 ΔE 0.053
- Dull Blue #49759C ΔE 0.054
- Iris #6258C4 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.062
Use #5B6BB2 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.