#4259E0#4259E0

#4259E0 is a mid, highly saturated blue. Relative luminance 0.137; OKLCH L 52.9% C 0.206 H 270.3°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#4259E0
RGB	rgb(66, 89, 224)
HSL	hsl(231, 72%, 57%)
HSV	hsv(231, 71%, 88%)
CMYK	cmyk(70.5%, 60.3%, 0%, 12.2%)
CIE-LAB	lab(43.77, 36.08, -71.29)
CIE-LCH	lch(43.77, 79.90, 296.84°)
OKLab	oklab(52.94% 0.0011 -0.2058)
OKLCH	oklch(52.94% 0.206 270.3)
XYZ	xyz(19.2691, 13.6829, 72.1321)
Luminance	0.1368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259E0 #E0C942

analogous

#42A8E0 #4259E0 #7A42E0

triadic

#4259E0 #E04259 #59E042

tetradic

#4259E0 #E042A8 #E0C942 #42E07A

square

#4259E0 #E042A8 #E0C942 #42E07A

split-complementary

#4259E0 #E07A42 #A8E042

monochromatic

#182990 #2038C5 #4259E0 #7787E9 #ABB5F1

Accessibility & contrast

On white

5.62

#4259E0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#4259E0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259E0

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259E0	#FFFFFF	#000000	##FFFFFF
##4259E0	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FE4

Deuteranopia (green-blind)

#0060DD

Tritanopia (blue-blind)

#007B94

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4259e0;
/* rgb */ color: rgb(66, 89, 224);
/* oklch */ color: oklch(52.9% 0.206 270.3);

Tailwind

colors: {
  custom: {
    50: '#8a87eb',
    500: '#4259e0',
    950: '#000000',
  },
}

SCSS

$custom: #4259e0;
$custom-light: #8a87eb;
$custom-dark: #000000;

JSON

{
  "hex": "#4259e0",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 224
  },
  "hsl": {
    "h": 231.266,
    "s": 71.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.5294,
    "c": 0.20576,
    "h": 270.3
  },
  "luminance": 0.13685
}

Semantic roles & 50–950 ramp

primary

#4259E0

secondary

#DFD69F

accent

#D439EF

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4259E0

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →