#859EFF
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.2% 0.144 271.5), rgb(133, 158, 255).
Aa
Black text reads best on this color (8.33:1).
About this color
#859EFF is a medium-light, vivid blue. In OKLCH its lightness is 72%, its chroma 0.144 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.017 away. Black text reads best on it, at 8.33:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.33:1 |
| White text | 2.52:1 |
Values
| HEX | #859EFF |
| RGB | rgb(133, 158, 255) |
| HSL | hsl(228, 100%, 76%) |
| OKLCH | oklch(72.2% 0.144 271.5) |
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 #859EFF | 2.52:1 | Fails | Lc -54.4 | Large or bold text, headings |
| Black text on #859EFF | 8.33:1 | AAA | Lc 54.7 | Large or bold text, headings |
| #859EFF text on white | 2.52:1 | Fails | Lc 49.3 | Large or bold text, headings |
| #859EFF text on black | 8.33:1 | AAA | Lc -52.7 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ABBEFC
oklch(80.9% 0.09 271.1)
-
Step 400
400 (this color)
#859EFF
oklch(72.2% 0.144 271.5)
-
Step 500
500
#637CF7
oklch(63% 0.185 271.5)
-
Step 600
600
#4D62E6
oklch(55.6% 0.2 271.5)
-
Step 700
700
#3F50C8
oklch(49.2% 0.186 271.6)
-
Step 800
800
#3342A2
oklch(42.7% 0.155 271.4)
-
Step 900
900
#2C3980
oklch(37.6% 0.12 271.6)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#859EFF 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) | #79A9FF | 0.030 |
| Deuteranopia (no green cones) | #6D9EFD | 0.028 |
| Tritanopia (no blue cones) | #54B2C2 | 0.129 |
| Achromatopsia (no color) | #A3A3A3 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859EFF
#859EFF
oklch(72.2% 0.144 271.5)
- #C6A113
#C6A113
oklch(72.2% 0.144 91.7)
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 #859EFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.017
- Perrywinkle #8F8CE7 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.053
- Lavender Blue #8B88F8 ΔE 0.054
- Periwinkle #8E82FE ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.070
- Chefchaouen Blue #4895EF ΔE 0.074
- Soft Blue #6488EA ΔE 0.077
Use #859EFF 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.