#3583F8
Closest named color: Clear Blue (#247AFD). oklch(62.5% 0.191 258.8), rgb(53, 131, 248).
Aa
Black text reads best on this color (5.75:1).
About this color
#3583F8 is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.191 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.028 away. Black text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.75:1 |
| White text | 3.65:1 |
Values
| HEX | #3583F8 |
| RGB | rgb(53, 131, 248) |
| HSL | hsl(216, 93%, 59%) |
| OKLCH | oklch(62.5% 0.191 258.8) |
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 #3583F8 | 3.65:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #3583F8 | 5.75:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #3583F8 text on white | 3.65:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #3583F8 text on black | 5.75:1 | AA | Lc -38.1 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC2FD
oklch(80.8% 0.094 259)
-
Step 400
400
#64A0FC
oklch(70.6% 0.149 258.7)
-
Step 500
500 (this color)
#3583F8
oklch(62.5% 0.191 258.8)
-
Step 600
600
#096BE9
oklch(55.6% 0.207 258.7)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0449A4
oklch(42.7% 0.16 258.7)
-
Step 900
900
#103E82
oklch(37.6% 0.125 258.9)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#3583F8 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) | #408FFC | 0.033 |
| Deuteranopia (no green cones) | #007EF6 | 0.026 |
| Tritanopia (no blue cones) | #009FB1 | 0.148 |
| Achromatopsia (no color) | #868686 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3583F8
#3583F8
oklch(62.5% 0.191 258.8)
- #B17C00
#B17C00
oklch(62.4% 0.13 78.7)
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 #3583F8, closest first.
No curated palette has a color within ΔE 0.04 of #3583F8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.028
- Dodger Blue #1E90FF ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.047
- Soft Blue #6488EA ΔE 0.051
- Cornflower #6A79F7 ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.062
- Royal Blue #4169E1 ΔE 0.070
Use #3583F8 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.