#859BF3
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.9% 0.131 272), rgb(133, 155, 243).
Aa
Black text reads best on this color (7.98:1).
About this color
#859BF3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.131 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.019 away. Black text reads best on it, at 7.98:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.98:1 |
| White text | 2.63:1 |
Values
| HEX | #859BF3 |
| RGB | rgb(133, 155, 243) |
| HSL | hsl(228, 82%, 74%) |
| OKLCH | oklch(70.9% 0.131 272) |
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 #859BF3 | 2.63:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #859BF3 | 7.98:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #859BF3 text on white | 2.63:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #859BF3 text on black | 7.98:1 | AAA | Lc -50.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#AEBEF6
oklch(80.9% 0.081 272.1)
-
Step 400
400 (this color)
#859BF3
oklch(70.9% 0.131 272)
-
Step 500
500
#687EED
oklch(63% 0.167 272.3)
-
Step 600
600
#5165DC
oklch(55.7% 0.182 272)
-
Step 700
700
#4253BF
oklch(49.2% 0.169 271.9)
-
Step 800
800
#36449A
oklch(42.6% 0.14 272.1)
-
Step 900
900
#2E3B7B
oklch(37.8% 0.109 271.6)
-
Step 950
950
#1B2348
oklch(27% 0.069 271.9)
#859BF3 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) | #7BA4F7 | 0.024 |
| Deuteranopia (no green cones) | #719BF1 | 0.024 |
| Tritanopia (no blue cones) | #5DADBC | 0.116 |
| Achromatopsia (no color) | #9F9F9F | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BF3
#859BF3
oklch(70.9% 0.131 272)
- #BF9E2C
#BF9E2C
oklch(71% 0.131 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 #859BF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.019
- Perrywinkle #8F8CE7 ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.044
- Lavender Blue #8B88F8 ΔE 0.050
- Periwinkle #8E82FE ΔE 0.068
- Chefchaouen Blue #4895EF ΔE 0.068
- Soft Blue #6488EA ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.076
Use #859BF3 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.