#859CE9
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.6% 0.116 270.6), rgb(133, 156, 233).
Aa
Black text reads best on this color (7.92:1).
About this color
#859CE9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.116 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.032 away. Black text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.92:1 |
| White text | 2.64:1 |
Values
| HEX | #859CE9 |
| RGB | rgb(133, 156, 233) |
| HSL | hsl(226, 69%, 72%) |
| OKLCH | oklch(70.6% 0.116 270.6) |
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 #859CE9 | 2.64:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #859CE9 | 7.92:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #859CE9 text on white | 2.64:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #859CE9 text on black | 7.92:1 | AAA | Lc -50.4 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD8F5
oklch(88.4% 0.041 271.9)
-
Step 300
300
#AFBFF0
oklch(80.9% 0.072 270.6)
-
Step 400
400 (this color)
#859CE9
oklch(70.6% 0.116 270.6)
-
Step 500
500
#6882E3
oklch(63.2% 0.149 270.4)
-
Step 600
600
#5169D0
oklch(55.6% 0.161 270.5)
-
Step 700
700
#4257B4
oklch(49.1% 0.149 270.5)
-
Step 800
800
#364792
oklch(42.6% 0.125 270.7)
-
Step 900
900
#2F3D74
oklch(37.8% 0.095 270.5)
-
Step 950
950
#1B2444
oklch(27% 0.061 270.1)
#859CE9 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) | #81A4EC | 0.021 |
| Deuteranopia (no green cones) | #789BE7 | 0.017 |
| Tritanopia (no blue cones) | #62ACB8 | 0.104 |
| Achromatopsia (no color) | #9F9F9F | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859CE9
#859CE9
oklch(70.6% 0.116 270.6)
- #BC9D41
#BC9D41
oklch(70.6% 0.116 90.4)
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 #859CE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.032
- Perrywinkle #8F8CE7 ΔE 0.042
- Cornflower Blue #6495ED ΔE 0.046
- Lavender Blue #8B88F8 ΔE 0.060
- Chefchaouen Blue #4895EF ΔE 0.069
- Soft Blue #6488EA ΔE 0.071
- Carolina Blue #8AB8FE ΔE 0.075
- Pale Purple #B790D4 ΔE 0.076
Use #859CE9 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.