#5B83F8
Closest named color: Cornflower (#6A79F7). oklch(64% 0.18 267), rgb(91, 131, 248).
Aa
Black text reads best on this color (6.04:1).
About this color
#5B83F8 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.180 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.028 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #5B83F8 |
| RGB | rgb(91, 131, 248) |
| HSL | hsl(225, 92%, 66%) |
| OKLCH | oklch(64% 0.18 267) |
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 #5B83F8 | 3.47:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #5B83F8 | 6.04:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #5B83F8 text on white | 3.47:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #5B83F8 text on black | 6.04:1 | AA | Lc -39.7 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CBD9FA
oklch(88.5% 0.048 267.2)
-
Step 300
300
#A7BFFA
oklch(80.8% 0.088 267.3)
-
Step 400
400
#799CF8
oklch(70.7% 0.141 267)
-
Step 500
500 (this color)
#5B83F8
oklch(64% 0.18 267)
-
Step 600
600
#4066E4
oklch(55.6% 0.196 267)
-
Step 700
700
#3354C6
oklch(49.1% 0.182 267.1)
-
Step 800
800
#2A45A0
oklch(42.6% 0.151 267.1)
-
Step 900
900
#263C7F
oklch(37.8% 0.117 267)
-
Step 950
950
#16234A
oklch(26.9% 0.074 267.4)
#5B83F8 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) | #4791FC | 0.036 |
| Deuteranopia (no green cones) | #2683F6 | 0.041 |
| Tritanopia (no blue cones) | #009EB2 | 0.151 |
| Achromatopsia (no color) | #8A8A8A | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B83F8
#5B83F8
oklch(64% 0.18 267)
- #AE8600
#AE8600
oklch(64.1% 0.131 87.4)
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 #5B83F8, closest first.
No curated palette has a color within ΔE 0.04 of #5B83F8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.028
- Soft Blue #6488EA ΔE 0.028
- Dodger Blue #1E90FF ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.051
- Clear Blue #247AFD ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.054
- Lavender Blue #8B88F8 ΔE 0.063
Use #5B83F8 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.