#859BF4
Closest named color: Periwinkle Blue (#8F99FB). oklch(71% 0.133 272.1), rgb(133, 155, 244).
Aa
Black text reads best on this color (7.99:1).
About this color
#859BF4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.133 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.018 away. Black text reads best on it, at 7.99:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.99:1 |
| White text | 2.62:1 |
Values
| HEX | #859BF4 |
| RGB | rgb(133, 155, 244) |
| HSL | hsl(228, 83%, 74%) |
| OKLCH | oklch(71% 0.133 272.1) |
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 #859BF4 | 2.62:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #859BF4 | 7.99:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #859BF4 text on white | 2.62:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #859BF4 text on black | 7.99:1 | AAA | Lc -50.8 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#AEBEF7
oklch(80.9% 0.083 272.3)
-
Step 400
400 (this color)
#859BF4
oklch(71% 0.133 272.1)
-
Step 500
500
#677EEF
oklch(63.1% 0.17 272)
-
Step 600
600
#5164DD
oklch(55.6% 0.185 272.2)
-
Step 700
700
#4252C0
oklch(49.1% 0.172 272.2)
-
Step 800
800
#36449B
oklch(42.7% 0.142 272.1)
-
Step 900
900
#2E3A7B
oklch(37.6% 0.111 272.2)
-
Step 950
950
#1B2348
oklch(27% 0.069 271.9)
#859BF4 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) | #7AA5F8 | 0.027 |
| Deuteranopia (no green cones) | #709BF2 | 0.025 |
| Tritanopia (no blue cones) | #5CADBC | 0.118 |
| Achromatopsia (no color) | #A0A0A0 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BF4
#859BF4
oklch(71% 0.133 272.1)
- #BF9E2A
#BF9E2A
oklch(71% 0.132 92)
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 #859BF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.018
- Perrywinkle #8F8CE7 ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.050
- Periwinkle #8E82FE ΔE 0.067
- Chefchaouen Blue #4895EF ΔE 0.068
- Soft Blue #6488EA ΔE 0.068
- Carolina Blue #8AB8FE ΔE 0.076
Use #859BF4 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.