#1D277F#1D277F

#1D277F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.1% C 0.147 H 270.6°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#1D277F
RGB	rgb(29, 39, 127)
HSL	hsl(234, 63%, 31%)
HSV	hsv(234, 77%, 50%)
CMYK	cmyk(77.2%, 69.3%, 0%, 50.2%)
CIE-LAB	lab(21.00, 28.65, -50.72)
CIE-LCH	lch(21.00, 58.25, 299.46°)
OKLab	oklab(33.05% 0.0016 -0.1467)
OKLCH	oklch(33.05% 0.147 270.6)
XYZ	xyz(5.0617, 3.2440, 20.4340)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D277F #7F751D

analogous

#1D587F #1D277F #441D7F

triadic

#1D277F #7F1D27 #277F1D

tetradic

#1D277F #7F1D58 #7F751D #1D7F44

square

#1D277F #7F1D58 #7F751D #1D7F44

split-complementary

#1D277F #7F441D #587F1D

monochromatic

#06081B #12184D #1D277F #2836B1 #4251D4

Accessibility & contrast

On white

12.73

#1D277F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1D277F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D277F

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D277F	#FFFFFF	#000000	##FFFFFF
##1D277F	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003782

Deuteranopia (green-blind)

#002E7D

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d277f;
/* rgb */ color: rgb(29, 39, 127);
/* oklch */ color: oklch(33.1% 0.147 270.6);

Tailwind

colors: {
  custom: {
    50: '#6a61a5',
    500: '#1d277f',
    950: '#000000',
  },
}

SCSS

$custom: #1d277f;
$custom-light: #6a61a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d277f",
  "rgb": {
    "r": 29,
    "g": 39,
    "b": 127
  },
  "hsl": {
    "h": 233.878,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33052,
    "c": 0.14673,
    "h": 270.6
  },
  "luminance": 0.03245
}

Semantic roles & 50–950 ramp

primary

#1D277F

secondary

#B2A745

accent

#D542E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D277F

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

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