#1F35B4#1F35B4

#1F35B4 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.0% C 0.200 H 267.6°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F35B4
RGB	rgb(31, 53, 180)
HSL	hsl(231, 71%, 41%)
HSV	hsv(231, 83%, 71%)
CMYK	cmyk(82.8%, 70.6%, 0%, 29.4%)
CIE-LAB	lab(29.74, 39.46, -68.80)
CIE-LCH	lch(29.74, 79.31, 299.83°)
OKLab	oklab(41.03% -0.0082 -0.1994)
OKLCH	oklch(41.03% 0.2 267.6)
XYZ	xyz(10.0735, 6.1316, 43.8238)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F35B4 #B49E1F

analogous

#1F80B4 #1F35B4 #541FB4

triadic

#1F35B4 #B41F35 #35B41F

tetradic

#1F35B4 #B41F80 #B49E1F #1FB454

square

#1F35B4 #B41F80 #B49E1F #1FB454

split-complementary

#1F35B4 #B4541F #80B41F

monochromatic

#0D164C #162680 #1F35B4 #344DDC #687BE5

Accessibility & contrast

On white

9.43

#1F35B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1F35B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F35B4

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F35B4	#FFFFFF	#000000	##FFFFFF
##1F35B4	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#003FB2

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f35b4;
/* rgb */ color: rgb(31, 53, 180);
/* oklch */ color: oklch(41.0% 0.200 267.6);

Tailwind

colors: {
  custom: {
    50: '#776dcc',
    500: '#1f35b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f35b4;
$custom-light: #776dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f35b4",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 180
  },
  "hsl": {
    "h": 231.141,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41027,
    "c": 0.19956,
    "h": 267.6
  },
  "luminance": 0.06133
}

Semantic roles & 50–950 ramp

primary

#1F35B4

secondary

#CBBB64

accent

#D33AED

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #1F35B4

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

Preview Lab → · Contrast checker → · Palette generator →