#1D278D#1D278D

#1D278D is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.5% C 0.166 H 270.0°. Best body text is #FFFFFF at 12.16:1 contrast (WCAG AA passes).

Color values

HEX	#1D278D
RGB	rgb(29, 39, 141)
HSL	hsl(235, 66%, 33%)
HSV	hsv(235, 79%, 55%)
CMYK	cmyk(79.4%, 72.3%, 0%, 44.7%)
CIE-LAB	lab(22.43, 33.88, -57.15)
CIE-LCH	lch(22.43, 66.44, 300.66°)
OKLab	oklab(34.52% 0.0001 -0.1655)
OKLCH	oklch(34.52% 0.166 270)
XYZ	xyz(6.0383, 3.6347, 25.5775)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D278D #8D831D

analogous

#1D5F8D #1D278D #4B1D8D

triadic

#1D278D #8D1D27 #278D1D

tetradic

#1D278D #8D1D5F #8D831D #1D8D4B

square

#1D278D #8D1D5F #8D831D #1D8D4B

split-complementary

#1D278D #8D4B1D #5F8D1D

monochromatic

#080B27 #13195A #1D278D #2735C0 #4B57DA

Accessibility & contrast

On white

12.16

#1D278D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1D278D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D278D

12.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D278D	#FFFFFF	#000000	##FFFFFF
##1D278D	1.00	12.16	1.73	12.16
#FFFFFF	12.16	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B90

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1d278d;
/* rgb */ color: rgb(29, 39, 141);
/* oklch */ color: oklch(34.5% 0.166 270.0);

Tailwind

colors: {
  custom: {
    50: '#6e62af',
    500: '#1d278d',
    950: '#000000',
  },
}

SCSS

$custom: #1d278d;
$custom-light: #6e62af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d278d",
  "rgb": {
    "r": 29,
    "g": 39,
    "b": 141
  },
  "hsl": {
    "h": 234.643,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34518,
    "c": 0.1655,
    "h": 270
  },
  "luminance": 0.03635
}

Semantic roles & 50–950 ramp

primary

#1D278D

secondary

#BCB24A

accent

#DA3FE9

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #1D278D

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

Preview Lab → · Contrast checker → · Palette generator →