#537CFE
Closest named color: Cornflower (#6A79F7). oklch(62.6% 0.199 267.3), rgb(83, 124, 254).
Aa
Black text reads best on this color (5.68:1).
About this color
#537CFE is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.199 and its hue 267°. 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 5.68:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #537CFE |
| RGB | rgb(83, 124, 254) |
| HSL | hsl(226, 99%, 66%) |
| OKLCH | oklch(62.6% 0.199 267.3) |
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 #537CFE | 3.69:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #537CFE | 5.68:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #537CFE text on white | 3.69:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #537CFE text on black | 5.68:1 | AA | Lc -37.5 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FE
oklch(88.5% 0.054 266.8)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500 (this color)
#537CFE
oklch(62.6% 0.199 267.3)
-
Step 600
600
#3C62EF
oklch(55.5% 0.216 267.3)
-
Step 700
700
#2F50D0
oklch(49.1% 0.201 267.2)
-
Step 800
800
#2743A8
oklch(42.7% 0.166 267.1)
-
Step 900
900
#233A85
oklch(37.7% 0.129 267.1)
-
Step 950
950
#15234E
oklch(27.1% 0.081 267.2)
#537CFE 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) | #298DFF | 0.047 |
| Deuteranopia (no green cones) | #007DFB | 0.045 |
| Tritanopia (no blue cones) | #009BB1 | 0.163 |
| Achromatopsia (no color) | #858585 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537CFE
#537CFE
oklch(62.6% 0.199 267.3)
- #A98200
#A98200
oklch(62.7% 0.128 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 #537CFE, closest first.
No curated palette has a color within ΔE 0.04 of #537CFE.
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 0.037
- Soft Blue #6488EA ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.065
- Medium Slate Blue #7B68EE ΔE 0.066
- Royal Blue #4169E1 ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.069
Use #537CFE 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.