#859BF0
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.8% 0.127 271.8), rgb(133, 155, 240).
Aa
Black text reads best on this color (7.94:1).
About this color
#859BF0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.127 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.022 away. Black text reads best on it, at 7.94:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.94:1 |
| White text | 2.64:1 |
Values
| HEX | #859BF0 |
| RGB | rgb(133, 155, 240) |
| HSL | hsl(228, 78%, 73%) |
| OKLCH | oklch(70.8% 0.127 271.8) |
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 #859BF0 | 2.64:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #859BF0 | 7.94:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #859BF0 text on white | 2.64:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #859BF0 text on black | 7.94:1 | AAA | Lc -50.5 | 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
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#AEBEF5
oklch(80.9% 0.08 271.9)
-
Step 400
400 (this color)
#859BF0
oklch(70.8% 0.127 271.8)
-
Step 500
500
#687FEA
oklch(63% 0.162 271.9)
-
Step 600
600
#5166D9
oklch(55.6% 0.177 271.7)
-
Step 700
700
#4254BC
oklch(49.1% 0.164 271.6)
-
Step 800
800
#364598
oklch(42.6% 0.136 271.7)
-
Step 900
900
#2F3B79
oklch(37.7% 0.106 272.1)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#859BF0 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) | #7CA4F3 | 0.024 |
| Deuteranopia (no green cones) | #729BEE | 0.023 |
| Tritanopia (no blue cones) | #5FADBA | 0.114 |
| Achromatopsia (no color) | #9F9F9F | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BF0
#859BF0
oklch(70.8% 0.127 271.8)
- #BD9E32
#BD9E32
oklch(70.8% 0.127 92.4)
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 #859BF0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.022
- Perrywinkle #8F8CE7 ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.044
- Lavender Blue #8B88F8 ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.068
- Soft Blue #6488EA ΔE 0.068
- Periwinkle #8E82FE ΔE 0.070
- Carolina Blue #8AB8FE ΔE 0.076
Use #859BF0 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.