#1F1FA7#1F1FA7

#1F1FA7 is a dark, highly saturated blue. Relative luminance 0.041; OKLCH L 36.4% C 0.205 H 270.1°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#1F1FA7
RGB	rgb(31, 31, 167)
HSL	hsl(240, 69%, 39%)
HSV	hsv(240, 81%, 65%)
CMYK	cmyk(81.4%, 81.4%, 0%, 34.5%)
CIE-LAB	lab(23.87, 47.52, -70.71)
CIE-LCH	lch(23.87, 85.20, 303.90°)
OKLab	oklab(36.43% 0.0005 -0.2047)
OKLCH	oklch(36.43% 0.205 270.1)
XYZ	xyz(8.0277, 4.0604, 36.9124)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1FA7 #A7A71F

analogous

#1F63A7 #1F1FA7 #631FA7

triadic

#1F1FA7 #A71F1F #1FA71F

tetradic

#1F1FA7 #A71F63 #A7A71F #1FA763

square

#1F1FA7 #A71F63 #A7A71F #1FA763

split-complementary

#1F1FA7 #A7631F #63A71F

monochromatic

#0C0C40 #151573 #1F1FA7 #2B2BD8 #5F5FE1

Accessibility & contrast

On white

11.59

#1F1FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F1FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1FA7

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1FA7	#FFFFFF	#000000	##FFFFFF
##1F1FA7	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AB

Deuteranopia (green-blind)

#0032A5

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f1fa7;
/* rgb */ color: rgb(31, 31, 167);
/* oklch */ color: oklch(36.4% 0.205 270.1);

Tailwind

colors: {
  custom: {
    50: '#765ec3',
    500: '#1f1fa7',
    950: '#000000',
  },
}

SCSS

$custom: #1f1fa7;
$custom-light: #765ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1fa7",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 167
  },
  "hsl": {
    "h": 240,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.36433,
    "c": 0.20474,
    "h": 270.1
  },
  "luminance": 0.04061
}

Semantic roles & 50–950 ramp

primary

#1F1FA7

secondary

#C6C65C

accent

#EC3CEC

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #1F1FA7

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

Preview Lab → · Contrast checker → · Palette generator →