#1F1FA8#1F1FA8

#1F1FA8 is a dark, highly saturated blue. Relative luminance 0.041; OKLCH L 36.6% C 0.206 H 270.1°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F1FA8
RGB	rgb(31, 31, 168)
HSL	hsl(240, 69%, 39%)
HSV	hsv(240, 82%, 66%)
CMYK	cmyk(81.5%, 81.5%, 0%, 34.1%)
CIE-LAB	lab(23.99, 47.84, -71.12)
CIE-LCH	lch(23.99, 85.71, 303.93°)
OKLab	oklab(36.55% 0.0003 -0.2059)
OKLCH	oklch(36.55% 0.206 270.1)
XYZ	xyz(8.1205, 4.0975, 37.4011)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1FA8 #A8A81F

analogous

#1F64A8 #1F1FA8 #641FA8

triadic

#1F1FA8 #A81F1F #1FA81F

tetradic

#1F1FA8 #A81F64 #A8A81F #1FA864

square

#1F1FA8 #A81F64 #A8A81F #1FA864

split-complementary

#1F1FA8 #A8641F #64A81F

monochromatic

#0C0C41 #151574 #1F1FA8 #2C2CD8 #6060E2

Accessibility & contrast

On white

11.54

#1F1FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F1FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1FA8

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1FA8	#FFFFFF	#000000	##FFFFFF
##1F1FA8	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AC

Deuteranopia (green-blind)

#0032A6

Tritanopia (blue-blind)

#004B64

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f1fa8;
/* rgb */ color: rgb(31, 31, 168);
/* oklch */ color: oklch(36.6% 0.206 270.1);

Tailwind

colors: {
  custom: {
    50: '#765ec3',
    500: '#1f1fa8',
    950: '#000000',
  },
}

SCSS

$custom: #1f1fa8;
$custom-light: #765ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1fa8",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 168
  },
  "hsl": {
    "h": 240,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.36552,
    "c": 0.20591,
    "h": 270.1
  },
  "luminance": 0.04098
}

Semantic roles & 50–950 ramp

primary

#1F1FA8

secondary

#C6C65D

accent

#EC3CEC

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #1F1FA8

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

Preview Lab → · Contrast checker → · Palette generator →