#859DFF
Closest named color: Periwinkle Blue (#8F99FB). oklch(72% 0.145 271.9), rgb(133, 157, 255).
Aa
Black text reads best on this color (8.26:1).
About this color
#859DFF is a medium-light, vivid blue. In OKLCH its lightness is 72%, its chroma 0.145 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.015 away. Black text reads best on it, at 8.26:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.26:1 |
| White text | 2.54:1 |
Values
| HEX | #859DFF |
| RGB | rgb(133, 157, 255) |
| HSL | hsl(228, 100%, 76%) |
| OKLCH | oklch(72% 0.145 271.9) |
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 #859DFF | 2.54:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #859DFF | 8.26:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #859DFF text on white | 2.54:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #859DFF text on black | 8.26:1 | AAA | Lc -52.3 | 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
#ACBEFC
oklch(81% 0.09 271.8)
-
Step 400
400 (this color)
#859DFF
oklch(72% 0.145 271.9)
-
Step 500
500
#647CF8
oklch(63.1% 0.186 271.8)
-
Step 600
600
#4E61E7
oklch(55.6% 0.202 272)
-
Step 700
700
#404FC9
oklch(49.1% 0.188 272.1)
-
Step 800
800
#3442A2
oklch(42.7% 0.155 271.8)
-
Step 900
900
#2D3981
oklch(37.8% 0.121 272.2)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#859DFF 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) | #77A8FF | 0.031 |
| Deuteranopia (no green cones) | #6B9EFD | 0.030 |
| Tritanopia (no blue cones) | #55B2C2 | 0.130 |
| Achromatopsia (no color) | #A2A2A2 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859DFF
#859DFF
oklch(72% 0.145 271.9)
- #C5A00B
#C5A00B
oklch(71.9% 0.145 91.9)
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 #859DFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.015
- Perrywinkle #8F8CE7 ΔE 0.050
- Lavender Blue #8B88F8 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.052
- Periwinkle #8E82FE ΔE 0.066
- Carolina Blue #8AB8FE ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.073
- Soft Blue #6488EA ΔE 0.075
Use #859DFF 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.