#859BFB
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.4% 0.142 272.6), rgb(133, 155, 251).
Aa
Black text reads best on this color (8.07:1).
About this color
#859BFB is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.142 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.013 away. Black text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.07:1 |
| White text | 2.59:1 |
Values
| HEX | #859BFB |
| RGB | rgb(133, 155, 251) |
| HSL | hsl(229, 94%, 75%) |
| OKLCH | oklch(71.4% 0.142 272.6) |
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 #859BFB | 2.59:1 | Fails | Lc -55.8 | Large or bold text, headings |
| Black text on #859BFB | 8.07:1 | AAA | Lc 53.4 | Large or bold text, headings |
| #859BFB text on white | 2.59:1 | Fails | Lc 50.6 | Large or bold text, headings |
| #859BFB text on black | 8.07:1 | AAA | Lc -51.3 | 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
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FB
oklch(88.6% 0.049 272.8)
-
Step 300
300
#ADBDFB
oklch(80.8% 0.09 273.1)
-
Step 400
400 (this color)
#859BFB
oklch(71.4% 0.142 272.6)
-
Step 500
500
#667CF6
oklch(63.1% 0.183 272.4)
-
Step 600
600
#5061E4
oklch(55.5% 0.198 272.6)
-
Step 700
700
#4250C6
oklch(49.2% 0.182 272.6)
-
Step 800
800
#3642A0
oklch(42.7% 0.152 272.7)
-
Step 900
900
#2E397F
oklch(37.7% 0.118 272.7)
-
Step 950
950
#1B224B
oklch(27% 0.076 273)
#859BFB 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) | #77A6FF | 0.030 |
| Deuteranopia (no green cones) | #6B9CF9 | 0.030 |
| Tritanopia (no blue cones) | #58AFBF | 0.127 |
| Achromatopsia (no color) | #A0A0A0 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BFB
#859BFB
oklch(71.4% 0.142 272.6)
- #C29F13
#C29F13
oklch(71.4% 0.142 92.5)
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 #859BFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.013
- Perrywinkle #8F8CE7 ΔE 0.043
- Lavender Blue #8B88F8 ΔE 0.047
- Cornflower Blue #6495ED ΔE 0.048
- Periwinkle #8E82FE ΔE 0.063
- Soft Blue #6488EA ΔE 0.070
- Chefchaouen Blue #4895EF ΔE 0.070
- Carolina Blue #8AB8FE ΔE 0.077
Use #859BFB 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.