#1D277D#1D277D

#1D277D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.8% C 0.144 H 270.7°. Best body text is #FFFFFF at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#1D277D
RGB	rgb(29, 39, 125)
HSL	hsl(234, 62%, 30%)
HSV	hsv(234, 77%, 49%)
CMYK	cmyk(76.8%, 68.8%, 0%, 51%)
CIE-LAB	lab(20.80, 27.89, -49.78)
CIE-LCH	lch(20.80, 57.06, 299.26°)
OKLab	oklab(32.85% 0.0018 -0.144)
OKLCH	oklch(32.85% 0.144 270.7)
XYZ	xyz(4.9326, 3.1924, 19.7543)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D277D #7D731D

analogous

#1D577D #1D277D #431D7D

triadic

#1D277D #7D1D27 #277D1D

tetradic

#1D277D #7D1D57 #7D731D #1D7D43

square

#1D277D #7D1D57 #7D731D #1D7D43

split-complementary

#1D277D #7D431D #577D1D

monochromatic

#06081A #11184B #1D277D #2936AF #4151D3

Accessibility & contrast

On white

12.82

#1D277D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1D277D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D277D

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D277D	#FFFFFF	#000000	##FFFFFF
##1D277D	1.00	12.82	1.64	12.82
#FFFFFF	12.82	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003780

Deuteranopia (green-blind)

#002E7B

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d277d;
/* rgb */ color: rgb(29, 39, 125);
/* oklch */ color: oklch(32.8% 0.144 270.7);

Tailwind

colors: {
  custom: {
    50: '#6961a4',
    500: '#1d277d',
    950: '#000000',
  },
}

SCSS

$custom: #1d277d;
$custom-light: #6961a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d277d",
  "rgb": {
    "r": 29,
    "g": 39,
    "b": 125
  },
  "hsl": {
    "h": 233.75,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32848,
    "c": 0.14397,
    "h": 270.7
  },
  "luminance": 0.03193
}

Semantic roles & 50–950 ramp

primary

#1D277D

secondary

#B1A545

accent

#D442E5

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1D277D

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

Preview Lab → · Contrast checker → · Palette generator →