#5A6EB3
Closest named color: French Blue (#436BAD). oklch(55.4% 0.11 270.3), rgb(90, 110, 179).
Aa
White text reads best on this color (4.86:1).
About this color
#5A6EB3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.110 and its hue 270°. 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 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.31:1 |
| White text | 4.86:1 |
Values
| HEX | #5A6EB3 |
| RGB | rgb(90, 110, 179) |
| HSL | hsl(227, 37%, 53%) |
| OKLCH | oklch(55.4% 0.11 270.3) |
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 #5A6EB3 | 4.86:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #5A6EB3 | 4.31:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #5A6EB3 text on white | 4.86:1 | AA | Lc 73.6 | Content text, not long reading |
| #5A6EB3 text on black | 4.31:1 | AA large text | Lc -28.1 | 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
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E2
oklch(81% 0.05 269.9)
-
Step 400
400
#8D9FD3
oklch(70.8% 0.079 269.6)
-
Step 500
500
#7286C7
oklch(63.1% 0.101 270.3)
-
Step 600
600 (this color)
#5A6EB3
oklch(55.4% 0.11 270.3)
-
Step 700
700
#4B5C9B
oklch(49.1% 0.103 270.8)
-
Step 800
800
#3D4C7D
oklch(42.7% 0.084 269.7)
-
Step 900
900
#343F65
oklch(37.6% 0.067 270.7)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#5A6EB3 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) | #5375B6 | 0.020 |
| Deuteranopia (no green cones) | #4A6EB1 | 0.020 |
| Tritanopia (no blue cones) | #357D88 | 0.099 |
| Achromatopsia (no color) | #717171 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A6EB3
#5A6EB3
oklch(55.4% 0.11 270.3)
- #8B6F0B
#8B6F0B
oklch(55.3% 0.11 90.6)
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 #5A6EB3, closest first.
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 0.041
- Windows Blue #3778BF ΔE 0.042
- Muted Blue #3B719F ΔE 0.050
- Dull Blue #49759C ΔE 0.050
- Mid Blue #276AB3 ΔE 0.054
- Steel Blue #4682B4 ΔE 0.057
- Stormy Blue #507B9C ΔE 0.059
Use #5A6EB3 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.