#5F64BA
Closest named color: Iris (#6258C4). oklch(54.1% 0.133 278.5), rgb(95, 100, 186).
Aa
White text reads best on this color (5.22:1).
About this color
#5F64BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.133 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.036 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #5F64BA |
| RGB | rgb(95, 100, 186) |
| HSL | hsl(237, 40%, 55%) |
| OKLCH | oklch(54.1% 0.133 278.5) |
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 #5F64BA | 5.22:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #5F64BA | 4.01:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #5F64BA text on white | 5.22:1 | AA | Lc 75.8 | Fine for body text |
| #5F64BA text on black | 4.01:1 | AA large text | Lc -26.0 | 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
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B7BDE7
oklch(80.8% 0.06 278.6)
-
Step 400
400
#939BDC
oklch(70.8% 0.095 278.3)
-
Step 500
500
#7981D2
oklch(63.2% 0.122 278)
-
Step 600
600 (this color)
#5F64BA
oklch(54.1% 0.133 278.5)
-
Step 700
700
#5257A5
oklch(49.2% 0.123 278.1)
-
Step 800
800
#434786
oklch(42.7% 0.103 278.3)
-
Step 900
900
#393C6B
oklch(37.7% 0.08 279.1)
-
Step 950
950
#21233F
oklch(26.9% 0.052 279.2)
#5F64BA 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) | #4070BD | 0.044 |
| Deuteranopia (no green cones) | #3869B8 | 0.046 |
| Tritanopia (no blue cones) | #3D7686 | 0.115 |
| Achromatopsia (no color) | #6C6C6C | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F64BA
#5F64BA
oklch(54.1% 0.133 278.5)
- #806F00
#806F00
oklch(54.1% 0.112 98.6)
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 #5F64BA, closest first.
No curated palette has a color within ΔE 0.04 of #5F64BA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.043
- French Blue #436BAD ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.047
- Mid Blue #276AB3 ΔE 0.061
- Windows Blue #3778BF ΔE 0.063
- Flat Blue #3C73A8 ΔE 0.066
Use #5F64BA 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.