#1A277E#1A277E

#1A277E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.8% C 0.146 H 269.4°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#1A277E
RGB	rgb(26, 39, 126)
HSL	hsl(232, 66%, 30%)
HSV	hsv(232, 79%, 49%)
CMYK	cmyk(79.4%, 69%, 0%, 50.6%)
CIE-LAB	lab(20.74, 27.94, -50.52)
CIE-LCH	lch(20.74, 57.73, 298.95°)
OKLab	oklab(32.79% -0.0015 -0.1462)
OKLCH	oklch(32.79% 0.146 269.4)
XYZ	xyz(4.9161, 3.1765, 20.0886)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A277E #7E711A

analogous

#1A597E #1A277E #3F1A7E

triadic

#1A277E #7E1A27 #277E1A

tetradic

#1A277E #7E1A59 #7E711A #1A7E3F

square

#1A277E #7E1A59 #7E711A #1A7E3F

split-complementary

#1A277E #7E3F1A #597E1A

monochromatic

#050819 #10174B #1A277E #2437B1 #3C50D7

Accessibility & contrast

On white

12.84

#1A277E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1A277E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A277E

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A277E	#FFFFFF	#000000	##FFFFFF
##1A277E	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002D7C

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1a277e;
/* rgb */ color: rgb(26, 39, 126);
/* oklch */ color: oklch(32.8% 0.146 269.4);

Tailwind

colors: {
  custom: {
    50: '#6961a4',
    500: '#1a277e',
    950: '#000000',
  },
}

SCSS

$custom: #1a277e;
$custom-light: #6961a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1a277e",
  "rgb": {
    "r": 26,
    "g": 39,
    "b": 126
  },
  "hsl": {
    "h": 232.2,
    "s": 65.789,
    "l": 29.804
  },
  "oklch": {
    "l": 0.3279,
    "c": 0.14621,
    "h": 269.4
  },
  "luminance": 0.03177
}

Semantic roles & 50–950 ramp

primary

#1A277E

secondary

#B2A342

accent

#D33FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A277E

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

Preview Lab → · Contrast checker → · Palette generator →