#4059CB#4059CB

#4059CB is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.1% C 0.179 H 269.6°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#4059CB
RGB	rgb(64, 89, 203)
HSL	hsl(229, 57%, 52%)
HSV	hsv(229, 68%, 80%)
CMYK	cmyk(68.5%, 56.2%, 0%, 20.4%)
CIE-LAB	lab(42.07, 28.41, -62.05)
CIE-LCH	lch(42.07, 68.24, 294.60°)
OKLab	oklab(51.14% -0.0011 -0.1786)
OKLCH	oklch(51.14% 0.179 269.6)
XYZ	xyz(16.4625, 12.5449, 58.0422)
Luminance	0.1255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4059CB #CBB240

analogous

#409ECB #4059CB #6D40CB

triadic

#4059CB #CB4059 #59CB40

tetradic

#4059CB #CB409E #CBB240 #40CB6D

square

#4059CB #CB409E #CBB240 #40CB6D

split-complementary

#4059CB #CB6D40 #9ECB40

monochromatic

#1F2E72 #2C41A2 #4059CB #7083D8 #A0ADE5

Accessibility & contrast

On white

5.98

#4059CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#4059CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4059CB

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4059CB	#FFFFFF	#000000	##FFFFFF
##4059CB	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#007589

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4059cb;
/* rgb */ color: rgb(64, 89, 203);
/* oklch */ color: oklch(51.1% 0.179 269.6);

Tailwind

colors: {
  custom: {
    50: '#8587dc',
    500: '#4059cb',
    950: '#000000',
  },
}

SCSS

$custom: #4059cb;
$custom-light: #8587dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4059cb",
  "rgb": {
    "r": 64,
    "g": 89,
    "b": 203
  },
  "hsl": {
    "h": 229.209,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.51141,
    "c": 0.17864,
    "h": 269.6
  },
  "luminance": 0.12547
}

Semantic roles & 50–950 ramp

primary

#4059CB

secondary

#D2C795

accent

#C547E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4059CB

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

Preview Lab → · Contrast checker → · Palette generator →