#1F1F76#1F1F76

#1F1F76 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.143 H 274.1°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#1F1F76
RGB	rgb(31, 31, 118)
HSL	hsl(240, 58%, 29%)
HSV	hsv(240, 74%, 46%)
CMYK	cmyk(73.7%, 73.7%, 0%, 53.7%)
CIE-LAB	lab(18.27, 30.77, -49.46)
CIE-LCH	lch(18.27, 58.25, 301.89°)
OKLab	oklab(30.84% 0.0101 -0.143)
OKLCH	oklch(30.84% 0.143 274.1)
XYZ	xyz(4.3240, 2.5789, 17.4059)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1F76 #76761F

analogous

#1F4B76 #1F1F76 #4B1F76

triadic

#1F1F76 #761F1F #1F761F

tetradic

#1F1F76 #761F4B #76761F #1F764B

square

#1F1F76 #761F4B #76761F #1F764B

split-complementary

#1F1F76 #764B1F #4B761F

monochromatic

#060618 #121246 #1F1F76 #2C2CA6 #4242CD

Accessibility & contrast

On white

13.85

#1F1F76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1F1F76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1F76

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1F76	#FFFFFF	#000000	##FFFFFF
##1F1F76	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003179

Deuteranopia (green-blind)

#002874

Tritanopia (blue-blind)

#003748

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f1f76;
/* rgb */ color: rgb(31, 31, 118);
/* oklch */ color: oklch(30.8% 0.143 274.1);

Tailwind

colors: {
  custom: {
    50: '#695b9e',
    500: '#1f1f76',
    950: '#000000',
  },
}

SCSS

$custom: #1f1f76;
$custom-light: #695b9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1f76",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 118
  },
  "hsl": {
    "h": 240,
    "s": 58.389,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30838,
    "c": 0.14335,
    "h": 274.1
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#1F1F76

secondary

#AAAA47

accent

#E246E2

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1F1F76

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

Preview Lab → · Contrast checker → · Palette generator →