#537AFC
Closest named color: Cornflower (#6A79F7). oklch(62.1% 0.198 267.7), rgb(83, 122, 252).
Aa
Black text reads best on this color (5.55:1).
About this color
#537AFC is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.198 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.027 away. Black text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.55:1 |
| White text | 3.77:1 |
Values
| HEX | #537AFC |
| RGB | rgb(83, 122, 252) |
| HSL | hsl(226, 97%, 66%) |
| OKLCH | oklch(62.1% 0.198 267.7) |
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 #537AFC | 3.77:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #537AFC | 5.55:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #537AFC text on white | 3.77:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #537AFC text on black | 5.55:1 | AA | Lc -36.7 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CAD9FE
oklch(88.6% 0.054 267.9)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500 (this color)
#537AFC
oklch(62.1% 0.198 267.7)
-
Step 600
600
#3E62EF
oklch(55.6% 0.216 267.7)
-
Step 700
700
#3150D0
oklch(49.1% 0.2 267.6)
-
Step 800
800
#2942A8
oklch(42.6% 0.166 267.9)
-
Step 900
900
#243A85
oklch(37.8% 0.129 267.5)
-
Step 950
950
#15234E
oklch(27.1% 0.081 267.2)
#537AFC 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) | #258BFF | 0.048 |
| Deuteranopia (no green cones) | #007CF9 | 0.045 |
| Tritanopia (no blue cones) | #0099AF | 0.163 |
| Achromatopsia (no color) | #838383 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537AFC
#537AFC
oklch(62.1% 0.198 267.7)
- #A78000
#A78000
oklch(62% 0.127 87.1)
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 #537AFC, closest first.
No curated palette has a color within ΔE 0.04 of #537AFC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.027
- Clear Blue #247AFD ΔE 0.036
- Soft Blue #6488EA ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.059
- Royal Blue #4169E1 ΔE 0.062
- Medium Slate Blue #7B68EE ΔE 0.063
- Cerulean Blue #056EEE ΔE 0.066
- Dark Sky Blue #448EE4 ΔE 0.067
Use #537AFC 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.