#4259D1#4259D1

#4259D1 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.7% C 0.186 H 270.3°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#4259D1
RGB	rgb(66, 89, 209)
HSL	hsl(230, 61%, 54%)
HSV	hsv(230, 68%, 82%)
CMYK	cmyk(68.4%, 57.4%, 0%, 18%)
CIE-LAB	lab(42.62, 30.82, -64.60)
CIE-LCH	lch(42.62, 71.58, 295.51°)
OKLab	oklab(51.72% 0.001 -0.1861)
OKLCH	oklch(51.72% 0.186 270.3)
XYZ	xyz(17.3239, 12.9048, 61.8871)
Luminance	0.1291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259D1 #D1BA42

analogous

#42A1D1 #4259D1 #7342D1

triadic

#4259D1 #D14259 #59D142

tetradic

#4259D1 #D142A1 #D1BA42 #42D173

square

#4259D1 #D142A1 #D1BA42 #42D173

split-complementary

#4259D1 #D17342 #A1D142

monochromatic

#1E2D7B #2A3FAC #4259D1 #7384DD #A4AFE9

Accessibility & contrast

On white

5.86

#4259D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#4259D1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259D1

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259D1	#FFFFFF	#000000	##FFFFFF
##4259D1	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD5

Deuteranopia (green-blind)

#005ECF

Tritanopia (blue-blind)

#00778C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4259d1;
/* rgb */ color: rgb(66, 89, 209);
/* oklch */ color: oklch(51.7% 0.186 270.3);

Tailwind

colors: {
  custom: {
    50: '#8787e0',
    500: '#4259d1',
    950: '#000000',
  },
}

SCSS

$custom: #4259d1;
$custom-light: #8787e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4259d1",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 209
  },
  "hsl": {
    "h": 230.35,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.51721,
    "c": 0.18612,
    "h": 270.3
  },
  "luminance": 0.12906
}

Semantic roles & 50–950 ramp

primary

#4259D1

secondary

#D6CC99

accent

#CA44E4

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4259D1

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

Preview Lab → · Contrast checker → · Palette generator →