#859BF9
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.3% 0.14 272.5), rgb(133, 155, 249).
Aa
Black text reads best on this color (8.05:1).
About this color
#859BF9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.140 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.014 away. Black text reads best on it, at 8.05:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.05:1 |
| White text | 2.60:1 |
Values
| HEX | #859BF9 |
| RGB | rgb(133, 155, 249) |
| HSL | hsl(229, 91%, 75%) |
| OKLCH | oklch(71.3% 0.14 272.5) |
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 #859BF9 | 2.60:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #859BF9 | 8.05:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #859BF9 text on white | 2.60:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #859BF9 text on black | 8.05:1 | AAA | Lc -51.1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEFA
oklch(81% 0.087 272.1)
-
Step 400
400 (this color)
#859BF9
oklch(71.3% 0.14 272.5)
-
Step 500
500
#677DF4
oklch(63.2% 0.178 272.4)
-
Step 600
600
#5062E2
oklch(55.5% 0.194 272.4)
-
Step 700
700
#4250C5
oklch(49.1% 0.181 272.6)
-
Step 800
800
#36439F
oklch(42.8% 0.149 272.4)
-
Step 900
900
#2E397E
oklch(37.6% 0.117 272.7)
-
Step 950
950
#1B224A
oklch(27% 0.074 273)
#859BF9 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) | #78A5FD | 0.027 |
| Deuteranopia (no green cones) | #6D9CF7 | 0.028 |
| Tritanopia (no blue cones) | #59AFBE | 0.125 |
| Achromatopsia (no color) | #A0A0A0 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #859BF9
#859BF9
oklch(71.3% 0.14 272.5)
- #C19F1B
#C19F1B
oklch(71.3% 0.14 92.6)
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 #859BF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.014
- Perrywinkle #8F8CE7 ΔE 0.042
- Cornflower Blue #6495ED ΔE 0.047
- Lavender Blue #8B88F8 ΔE 0.048
- Periwinkle #8E82FE ΔE 0.064
- Soft Blue #6488EA ΔE 0.069
- Chefchaouen Blue #4895EF ΔE 0.069
- Carolina Blue #8AB8FE ΔE 0.076
Use #859BF9 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.