#5865B3
Closest named color: French Blue (#436BAD). oklch(53.3% 0.123 274.4), rgb(88, 101, 179).
Aa
White text reads best on this color (5.34:1).
About this color
#5865B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.123 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 5.34:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.92:1 |
| White text | 5.34:1 |
Values
| HEX | #5865B3 |
| RGB | rgb(88, 101, 179) |
| HSL | hsl(231, 37%, 52%) |
| OKLCH | oklch(53.3% 0.123 274.4) |
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 #5865B3 | 5.34:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #5865B3 | 3.92:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #5865B3 text on white | 5.34:1 | AA | Lc 76.5 | Fine for body text |
| #5865B3 text on black | 3.92:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8EE
oklch(88.5% 0.031 275.6)
-
Step 300
300
#B5BFE5
oklch(81% 0.055 273.5)
-
Step 400
400
#909DD8
oklch(70.8% 0.088 274.4)
-
Step 500
500
#7583CD
oklch(63% 0.113 274.6)
-
Step 600
600 (this color)
#5865B3
oklch(53.3% 0.123 274.4)
-
Step 700
700
#4E5AA1
oklch(49.2% 0.114 274.2)
-
Step 800
800
#404982
oklch(42.6% 0.095 274.9)
-
Step 900
900
#363E68
oklch(37.7% 0.073 274.2)
-
Step 950
950
#20243D
oklch(26.9% 0.047 275.9)
#5865B3 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) | #456FB6 | 0.032 |
| Deuteranopia (no green cones) | #3C67B1 | 0.033 |
| Tritanopia (no blue cones) | #327683 | 0.110 |
| Achromatopsia (no color) | #6B6B6B | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5865B3
#5865B3
oklch(53.3% 0.123 274.4)
- #816B00
#816B00
oklch(53.3% 0.109 94.7)
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 #5865B3, closest first.
No curated palette has a color within ΔE 0.04 of #5865B3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.031
- Iris #6258C4 ΔE 0.046
- Mid Blue #276AB3 ΔE 0.050
- Flat Blue #3C73A8 ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.056
- Windows Blue #3778BF ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.057
Use #5865B3 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.