#1A277B#1A277B

#1A277B is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.5% C 0.142 H 269.5°. Best body text is #FFFFFF at 12.96:1 contrast (WCAG AA passes).

Color values

HEX	#1A277B
RGB	rgb(26, 39, 123)
HSL	hsl(232, 65%, 29%)
HSV	hsv(232, 79%, 48%)
CMYK	cmyk(78.9%, 68.3%, 0%, 51.8%)
CIE-LAB	lab(20.44, 26.78, -49.10)
CIE-LCH	lch(20.44, 55.93, 298.61°)
OKLab	oklab(32.48% -0.0012 -0.142)
OKLCH	oklch(32.48% 0.142 269.5)
XYZ	xyz(4.7254, 3.1002, 19.0844)
Luminance	0.0310 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A277B #7B6E1A

analogous

#1A587B #1A277B #3E1A7B

triadic

#1A277B #7B1A27 #277B1A

tetradic

#1A277B #7B1A58 #7B6E1A #1A7B3E

square

#1A277B #7B1A58 #7B6E1A #1A7B3E

split-complementary

#1A277B #7B3E1A #587B1A

monochromatic

#050819 #0F1748 #1A277B #2537AE #3A4FD5

Accessibility & contrast

On white

12.96

#1A277B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1A277B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A277B

12.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A277B	#FFFFFF	#000000	##FFFFFF
##1A277B	1.00	12.96	1.62	12.96
#FFFFFF	12.96	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367E

Deuteranopia (green-blind)

#002D79

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1a277b;
/* rgb */ color: rgb(26, 39, 123);
/* oklch */ color: oklch(32.5% 0.142 269.5);

Tailwind

colors: {
  custom: {
    50: '#6861a2',
    500: '#1a277b',
    950: '#000000',
  },
}

SCSS

$custom: #1a277b;
$custom-light: #6861a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a277b",
  "rgb": {
    "r": 26,
    "g": 39,
    "b": 123
  },
  "hsl": {
    "h": 231.959,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32483,
    "c": 0.14206,
    "h": 269.5
  },
  "luminance": 0.03101
}

Semantic roles & 50–950 ramp

primary

#1A277B

secondary

#AFA142

accent

#D240E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A277B

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

Preview Lab → · Contrast checker → · Palette generator →