#4259BB#4259BB

#4259BB is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.0% C 0.156 H 270.0°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#4259BB
RGB	rgb(66, 89, 187)
HSL	hsl(229, 48%, 50%)
HSV	hsv(229, 65%, 73%)
CMYK	cmyk(64.7%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(41.04, 23.05, -54.42)
CIE-LCH	lch(41.04, 59.10, 292.95°)
OKLab	oklab(50.04% -0.0001 -0.1562)
OKLCH	oklch(50.04% 0.156 270)
XYZ	xyz(14.7857, 11.8895, 48.5198)
Luminance	0.1189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259BB #BBA442

analogous

#4296BB #4259BB #6842BB

triadic

#4259BB #BB4259 #59BB42

tetradic

#4259BB #BB4296 #BBA442 #42BB68

square

#4259BB #BB4296 #BBA442 #42BB68

split-complementary

#4259BB #BB6842 #96BB42

monochromatic

#222E61 #32438E #4259BB #6E80CC #9CA8DC

Accessibility & contrast

On white

6.22

#4259BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#4259BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259BB

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259BB	#FFFFFF	#000000	##FFFFFF
##4259BB	1.00	6.22	3.38	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C66BE

Deuteranopia (green-blind)

#005CB9

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4259bb;
/* rgb */ color: rgb(66, 89, 187);
/* oklch */ color: oklch(50.0% 0.156 270.0);

Tailwind

colors: {
  custom: {
    50: '#8387d0',
    500: '#4259bb',
    950: '#000000',
  },
}

SCSS

$custom: #4259bb;
$custom-light: #8387d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4259bb",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 228.595,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.50036,
    "c": 0.15616,
    "h": 270
  },
  "luminance": 0.11891
}

Semantic roles & 50–950 ramp

primary

#4259BB

secondary

#C8BE91

accent

#BE50D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4259BB

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

Preview Lab → · Contrast checker → · Palette generator →