#4259DF#4259DF

#4259DF is a mid, highly saturated blue. Relative luminance 0.136; OKLCH L 52.9% C 0.204 H 270.3°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#4259DF
RGB	rgb(66, 89, 223)
HSL	hsl(231, 71%, 57%)
HSV	hsv(231, 70%, 87%)
CMYK	cmyk(70.4%, 60.1%, 0%, 12.5%)
CIE-LAB	lab(43.70, 35.73, -70.85)
CIE-LCH	lch(43.70, 79.35, 296.76°)
OKLab	oklab(52.86% 0.0011 -0.2045)
OKLCH	oklch(52.86% 0.204 270.3)
XYZ	xyz(19.1339, 13.6288, 71.4200)
Luminance	0.1363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259DF #DFC842

analogous

#42A8DF #4259DF #7A42DF

triadic

#4259DF #DF4259 #59DF42

tetradic

#4259DF #DF42A8 #DFC842 #42DF7A

square

#4259DF #DF42A8 #DFC842 #42DF7A

split-complementary

#4259DF #DF7A42 #A8DF42

monochromatic

#18298E #2139C3 #4259DF #7687E8 #ABB5F1

Accessibility & contrast

On white

5.64

#4259DF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#4259DF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259DF

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259DF	#FFFFFF	#000000	##FFFFFF
##4259DF	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FE3

Deuteranopia (green-blind)

#0060DC

Tritanopia (blue-blind)

#007B93

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4259df;
/* rgb */ color: rgb(66, 89, 223);
/* oklch */ color: oklch(52.9% 0.204 270.3);

Tailwind

colors: {
  custom: {
    50: '#8a87ea',
    500: '#4259df',
    950: '#000000',
  },
}

SCSS

$custom: #4259df;
$custom-light: #8a87ea;
$custom-dark: #000000;

JSON

{
  "hex": "#4259df",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 223
  },
  "hsl": {
    "h": 231.21,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.52858,
    "c": 0.20447,
    "h": 270.3
  },
  "luminance": 0.13631
}

Semantic roles & 50–950 ramp

primary

#4259DF

secondary

#DFD59E

accent

#D33AEE

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4259DF

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

Preview Lab → · Contrast checker → · Palette generator →