#1F34B4#1F34B4

#1F34B4 is a dark, highly saturated blue. Relative luminance 0.060; OKLCH L 40.9% C 0.201 H 267.8°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#1F34B4
RGB	rgb(31, 52, 180)
HSL	hsl(232, 71%, 41%)
HSV	hsv(232, 83%, 71%)
CMYK	cmyk(82.8%, 71.1%, 0%, 29.4%)
CIE-LAB	lab(29.52, 40.07, -69.17)
CIE-LCH	lch(29.52, 79.94, 300.09°)
OKLab	oklab(40.86% -0.0078 -0.2005)
OKLCH	oklch(40.86% 0.201 267.8)
XYZ	xyz(10.0284, 6.0414, 43.8087)
Luminance	0.0604 (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

#1F34B4 #B49F1F

analogous

#1F7FB4 #1F34B4 #551FB4

triadic

#1F34B4 #B41F34 #34B41F

tetradic

#1F34B4 #B41F7F #B49F1F #1FB455

square

#1F34B4 #B41F7F #B49F1F #1FB455

split-complementary

#1F34B4 #B4551F #7FB41F

monochromatic

#0D164C #162580 #1F34B4 #344CDC #687AE5

Accessibility & contrast

On white

9.51

#1F34B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1F34B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F34B4

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F34B4	#FFFFFF	#000000	##FFFFFF
##1F34B4	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#003EB2

Tritanopia (blue-blind)

#005870

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f34b4;
/* rgb */ color: rgb(31, 52, 180);
/* oklch */ color: oklch(40.9% 0.201 267.8);

Tailwind

colors: {
  custom: {
    50: '#776ccc',
    500: '#1f34b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f34b4;
$custom-light: #776ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f34b4",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 180
  },
  "hsl": {
    "h": 231.544,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.40864,
    "c": 0.20062,
    "h": 267.8
  },
  "luminance": 0.06043
}

Semantic roles & 50–950 ramp

primary

#1F34B4

secondary

#CBBC64

accent

#D43AED

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #1F34B4

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

Preview Lab → · Contrast checker → · Palette generator →