#4259D9#4259D9

#4259D9 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.4% C 0.197 H 270.3°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#4259D9
RGB	rgb(66, 89, 217)
HSL	hsl(231, 67%, 55%)
HSV	hsv(231, 70%, 85%)
CMYK	cmyk(69.6%, 59%, 0%, 14.9%)
CIE-LAB	lab(43.23, 33.63, -68.19)
CIE-LCH	lch(43.23, 76.04, 296.25°)
OKLab	oklab(52.36% 0.0011 -0.1967)
OKLCH	oklch(52.36% 0.197 270.3)
XYZ	xyz(18.3393, 13.3109, 67.2350)
Luminance	0.1331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259D9 #D9C242

analogous

#42A4D9 #4259D9 #7642D9

triadic

#4259D9 #D94259 #59D942

tetradic

#4259D9 #D942A4 #D9C242 #42D976

square

#4259D9 #D942A4 #D9C242 #42D976

split-complementary

#4259D9 #D97642 #A4D942

monochromatic

#1B2B86 #253CB9 #4259D9 #7586E3 #A8B3ED

Accessibility & contrast

On white

5.73

#4259D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#4259D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259D9

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259D9	#FFFFFF	#000000	##FFFFFF
##4259D9	1.00	5.73	3.66	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DDD

Deuteranopia (green-blind)

#005FD6

Tritanopia (blue-blind)

#007990

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #4259d9;
/* rgb */ color: rgb(66, 89, 217);
/* oklch */ color: oklch(52.4% 0.197 270.3);

Tailwind

colors: {
  custom: {
    50: '#8987e6',
    500: '#4259d9',
    950: '#000000',
  },
}

SCSS

$custom: #4259d9;
$custom-light: #8987e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4259d9",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 217
  },
  "hsl": {
    "h": 230.861,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.52365,
    "c": 0.19667,
    "h": 270.3
  },
  "luminance": 0.13313
}

Semantic roles & 50–950 ramp

primary

#4259D9

secondary

#DBD19C

accent

#CF3EE9

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4259D9

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

Preview Lab → · Contrast checker → · Palette generator →