#1F34A7#1F34A7

#1F34A7 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.184 H 267.9°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F34A7
RGB	rgb(31, 52, 167)
HSL	hsl(231, 69%, 39%)
HSV	hsv(231, 81%, 65%)
CMYK	cmyk(81.4%, 68.9%, 0%, 34.5%)
CIE-LAB	lab(28.21, 35.34, -63.54)
CIE-LCH	lch(28.21, 72.70, 299.08°)
OKLab	oklab(39.53% -0.0067 -0.1841)
OKLCH	oklch(39.53% 0.184 267.9)
XYZ	xyz(8.7657, 5.5363, 37.1583)
Luminance	0.0554 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F34A7 #A7921F

analogous

#1F78A7 #1F34A7 #4E1FA7

triadic

#1F34A7 #A71F34 #34A71F

tetradic

#1F34A7 #A71F78 #A7921F #1FA74E

square

#1F34A7 #A71F78 #A7921F #1FA74E

split-complementary

#1F34A7 #A74E1F #78A71F

monochromatic

#0C1440 #152473 #1F34A7 #2B46D8 #5F73E1

Accessibility & contrast

On white

9.96

#1F34A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1F34A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F34A7

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F34A7	#FFFFFF	#000000	##FFFFFF
##1F34A7	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AB

Deuteranopia (green-blind)

#003CA5

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f34a7;
/* rgb */ color: rgb(31, 52, 167);
/* oklch */ color: oklch(39.5% 0.184 267.9);

Tailwind

colors: {
  custom: {
    50: '#746bc2',
    500: '#1f34a7',
    950: '#000000',
  },
}

SCSS

$custom: #1f34a7;
$custom-light: #746bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f34a7",
  "rgb": {
    "r": 31,
    "g": 52,
    "b": 167
  },
  "hsl": {
    "h": 230.735,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39527,
    "c": 0.18418,
    "h": 267.9
  },
  "luminance": 0.05537
}

Semantic roles & 50–950 ramp

primary

#1F34A7

secondary

#C6B55C

accent

#D03CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F34A7

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

Preview Lab → · Contrast checker → · Palette generator →