#1F27A8#1F27A8

#1F27A8 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.6% C 0.199 H 269.5°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F27A8
RGB	rgb(31, 39, 168)
HSL	hsl(236, 69%, 39%)
HSV	hsv(236, 82%, 66%)
CMYK	cmyk(81.5%, 76.8%, 0%, 34.1%)
CIE-LAB	lab(25.47, 43.58, -68.67)
CIE-LCH	lch(25.47, 81.33, 302.40°)
OKLab	oklab(37.59% -0.0018 -0.1989)
OKLCH	oklch(37.59% 0.199 269.5)
XYZ	xyz(8.3561, 4.5685, 37.4796)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F27A8 #A8A01F

analogous

#1F6CA8 #1F27A8 #5C1FA8

triadic

#1F27A8 #A81F27 #27A81F

tetradic

#1F27A8 #A81F6C #A8A01F #1FA85C

square

#1F27A8 #A81F6C #A8A01F #1FA85C

split-complementary

#1F27A8 #A85C1F #6CA81F

monochromatic

#0C0F41 #151B74 #1F27A8 #2C36D8 #6067E2

Accessibility & contrast

On white

10.97

#1F27A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1F27A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F27A8

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F27A8	#FFFFFF	#000000	##FFFFFF
##1F27A8	1.00	10.97	1.91	10.97
#FFFFFF	10.97	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AC

Deuteranopia (green-blind)

#0035A6

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f27a8;
/* rgb */ color: rgb(31, 39, 168);
/* oklch */ color: oklch(37.6% 0.199 269.5);

Tailwind

colors: {
  custom: {
    50: '#7563c3',
    500: '#1f27a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f27a8;
$custom-light: #7563c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f27a8",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 168
  },
  "hsl": {
    "h": 236.496,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37589,
    "c": 0.19894,
    "h": 269.5
  },
  "luminance": 0.04569
}

Semantic roles & 50–950 ramp

primary

#1F27A8

secondary

#C6C05D

accent

#E13CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #1F27A8

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

Preview Lab → · Contrast checker → · Palette generator →