#1F2154#1F2154

#1F2154 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 27.9% C 0.091 H 277.1°. Best body text is #FFFFFF at 14.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F2154
RGB	rgb(31, 33, 84)
HSL	hsl(238, 46%, 23%)
HSV	hsv(238, 63%, 33%)
CMYK	cmyk(63.1%, 60.7%, 0%, 67.1%)
CIE-LAB	lab(15.59, 16.58, -31.46)
CIE-LCH	lch(15.59, 35.56, 297.79°)
OKLab	oklab(27.89% 0.0112 -0.0902)
OKLCH	oklch(27.89% 0.091 277.1)
XYZ	xyz(2.7087, 2.0189, 8.6327)
Luminance	0.0202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2154 #54521F

analogous

#1F3B54 #1F2154 #381F54

triadic

#1F2154 #541F21 #21541F

tetradic

#1F2154 #541F3B #54521F #1F5438

square

#1F2154 #541F3B #54521F #1F5438

split-complementary

#1F2154 #54381F #3B541F

monochromatic

#080916 #0F0F27 #1F2154 #2F3381 #4044AD

Accessibility & contrast

On white

14.96

#1F2154 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F2154 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2154

14.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2154	#FFFFFF	#000000	##FFFFFF
##1F2154	1.00	14.96	1.40	14.96
#FFFFFF	14.96	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002956

Deuteranopia (green-blind)

#002553

Tritanopia (blue-blind)

#012D36

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f2154;
/* rgb */ color: rgb(31, 33, 84);
/* oklch */ color: oklch(27.9% 0.091 277.1);

Tailwind

colors: {
  custom: {
    50: '#615c84',
    500: '#1f2154',
    950: '#000000',
  },
}

SCSS

$custom: #1f2154;
$custom-light: #615c84;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2154",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 84
  },
  "hsl": {
    "h": 237.736,
    "s": 46.087,
    "l": 22.549
  },
  "oklch": {
    "l": 0.27888,
    "c": 0.0909,
    "h": 277.1
  },
  "luminance": 0.02019
}

Semantic roles & 50–950 ramp

primary

#1F2154

secondary

#898646

accent

#D152D6

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05040B

muted

#79797C

Preview Lab

Preview with #1F2154

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

Preview Lab → · Contrast checker → · Palette generator →