#1F1977#1F1977

#1F1977 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.151 H 275.1°. Best body text is #FFFFFF at 14.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F1977
RGB	rgb(31, 25, 119)
HSL	hsl(244, 65%, 28%)
HSV	hsv(244, 79%, 47%)
CMYK	cmyk(73.9%, 79%, 0%, 53.3%)
CIE-LAB	lab(17.08, 34.78, -52.07)
CIE-LCH	lch(17.08, 62.62, 303.74°)
OKLab	oklab(30.02% 0.0134 -0.1506)
OKLCH	oklch(30.02% 0.151 275.1)
XYZ	xyz(4.2414, 2.3181, 17.6731)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1977 #717719

analogous

#194277 #1F1977 #4E1977

triadic

#1F1977 #771F19 #19771F

tetradic

#1F1977 #771942 #717719 #19774E

square

#1F1977 #771942 #717719 #19774E

split-complementary

#1F1977 #774E19 #427719

monochromatic

#070519 #120E44 #1F1977 #2C24AA #4036D5

Accessibility & contrast

On white

14.35

#1F1977 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#1F1977 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1977

14.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1977	#FFFFFF	#000000	##FFFFFF
##1F1977	1.00	14.35	1.46	14.35
#FFFFFF	14.35	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7A

Deuteranopia (green-blind)

#002675

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f1977;
/* rgb */ color: rgb(31, 25, 119);
/* oklch */ color: oklch(30.0% 0.151 275.1);

Tailwind

colors: {
  custom: {
    50: '#6a579f',
    500: '#1f1977',
    950: '#000000',
  },
}

SCSS

$custom: #1f1977;
$custom-light: #6a579f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1977",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 119
  },
  "hsl": {
    "h": 243.83,
    "s": 65.278,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3002,
    "c": 0.15117,
    "h": 275.1
  },
  "luminance": 0.02318
}

Semantic roles & 50–950 ramp

primary

#1F1977

secondary

#A5AC40

accent

#E840DD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1F1977

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

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