#1F159E#1F159E

#1F159E is a dark, highly saturated blue. Relative luminance 0.033; OKLCH L 34.3% C 0.202 H 271.3°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F159E
RGB	rgb(31, 21, 158)
HSL	hsl(244, 77%, 35%)
HSV	hsv(244, 87%, 62%)
CMYK	cmyk(80.4%, 86.7%, 0%, 38%)
CIE-LAB	lab(21.19, 49.31, -69.69)
CIE-LCH	lch(21.19, 85.37, 305.28°)
OKLab	oklab(34.26% 0.0047 -0.2016)
OKLCH	oklch(34.26% 0.202 271.3)
XYZ	xyz(7.0027, 3.2955, 32.6081)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F159E #949E15

analogous

#154F9E #1F159E #64159E

triadic

#1F159E #9E1F15 #159E1F

tetradic

#1F159E #9E154F #949E15 #159E64

square

#1F159E #9E154F #949E15 #159E64

split-complementary

#1F159E #9E6415 #4F9E15

monochromatic

#0A0732 #140E68 #1F159E #2A1CD4 #5347E7

Accessibility & contrast

On white

12.66

#1F159E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1F159E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F159E

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F159E	#FFFFFF	#000000	##FFFFFF
##1F159E	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0039A2

Deuteranopia (green-blind)

#002C9C

Tritanopia (blue-blind)

#00435D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f159e;
/* rgb */ color: rgb(31, 21, 158);
/* oklch */ color: oklch(34.3% 0.202 271.3);

Tailwind

colors: {
  custom: {
    50: '#7458bc',
    500: '#1f159e',
    950: '#000000',
  },
}

SCSS

$custom: #1f159e;
$custom-light: #7458bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f159e",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 158
  },
  "hsl": {
    "h": 244.38,
    "s": 76.536,
    "l": 35.098
  },
  "oklch": {
    "l": 0.3426,
    "c": 0.20163,
    "h": 271.3
  },
  "luminance": 0.03296
}

Semantic roles & 50–950 ramp

primary

#1F159E

secondary

#BEC747

accent

#F335E5

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F159E

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

Preview Lab → · Contrast checker → · Palette generator →