#4259CE#4259CE

#4259CE is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.5% C 0.182 H 270.3°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#4259CE
RGB	rgb(66, 89, 206)
HSL	hsl(230, 59%, 53%)
HSV	hsv(230, 68%, 81%)
CMYK	cmyk(68%, 56.8%, 0%, 19.2%)
CIE-LAB	lab(42.40, 29.76, -63.24)
CIE-LCH	lch(42.40, 69.89, 295.20°)
OKLab	oklab(51.48% 0.001 -0.1821)
OKLCH	oklch(51.48% 0.182 270.3)
XYZ	xyz(16.9559, 12.7576, 59.9494)
Luminance	0.1276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259CE #CEB742

analogous

#429FCE #4259CE #7142CE

triadic

#4259CE #CE4259 #59CE42

tetradic

#4259CE #CE429F #CEB742 #42CE71

square

#4259CE #CE429F #CEB742 #42CE71

split-complementary

#4259CE #CE7142 #9FCE42

monochromatic

#1F2D77 #2B40A7 #4259CE #7384DB #A3AEE7

Accessibility & contrast

On white

5.91

#4259CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#4259CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259CE

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259CE	#FFFFFF	#000000	##FFFFFF
##4259CE	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD2

Deuteranopia (green-blind)

#005ECC

Tritanopia (blue-blind)

#00768B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4259ce;
/* rgb */ color: rgb(66, 89, 206);
/* oklch */ color: oklch(51.5% 0.182 270.3);

Tailwind

colors: {
  custom: {
    50: '#8787de',
    500: '#4259ce',
    950: '#000000',
  },
}

SCSS

$custom: #4259ce;
$custom-light: #8787de;
$custom-dark: #000000;

JSON

{
  "hex": "#4259ce",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 206
  },
  "hsl": {
    "h": 230.143,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.51483,
    "c": 0.18211,
    "h": 270.3
  },
  "luminance": 0.12759
}

Semantic roles & 50–950 ramp

primary

#4259CE

secondary

#D4CA98

accent

#C846E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4259CE

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

Preview Lab → · Contrast checker → · Palette generator →