#5E66A8
Closest named color: French Blue (#436BAD). oklch(53.3% 0.104 277), rgb(94, 102, 168).
Aa
White text reads best on this color (5.32:1).
About this color
#5E66A8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.104 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.034 away. White text reads best on it, at 5.32:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #5E66A8 |
| RGB | rgb(94, 102, 168) |
| HSL | hsl(234, 30%, 51%) |
| OKLCH | oklch(53.3% 0.104 277) |
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 #5E66A8 | 5.32:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #5E66A8 | 3.94:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #5E66A8 text on white | 5.32:1 | AA | Lc 76.4 | Fine for body text |
| #5E66A8 text on black | 3.94:1 | AA large text | Lc -25.3 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B8BEDF
oklch(80.8% 0.047 277.2)
-
Step 400
400
#949DCF
oklch(70.7% 0.074 276.4)
-
Step 500
500
#7B84C3
oklch(63.2% 0.095 277.1)
-
Step 600
600 (this color)
#5E66A8
oklch(53.3% 0.104 277)
-
Step 700
700
#535A97
oklch(49% 0.098 277.2)
-
Step 800
800
#444A7A
oklch(42.6% 0.08 277)
-
Step 900
900
#393E62
oklch(37.6% 0.062 277)
-
Step 950
950
#21253A
oklch(27.1% 0.04 275.2)
#5E66A8 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) | #4E6EAB | 0.028 |
| Deuteranopia (no green cones) | #4968A6 | 0.028 |
| Tritanopia (no blue cones) | #45737F | 0.091 |
| Achromatopsia (no color) | #6B6B6B | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5E66A8
#5E66A8
oklch(53.3% 0.104 277)
- #7E6C13
#7E6C13
oklch(53.3% 0.103 96.7)
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 #5E66A8, closest first.
No curated palette has a color within ΔE 0.04 of #5E66A8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.034
- Dusky Blue #475F94 ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.050
- Muted Blue #3B719F ΔE 0.053
- Dull Blue #49759C ΔE 0.055
- Mid Blue #276AB3 ΔE 0.058
- Iris #6258C4 ΔE 0.061
- Windows Blue #3778BF ΔE 0.063
Use #5E66A8 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.