#1A277C#1A277C

#1A277C is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.6% C 0.143 H 269.5°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#1A277C
RGB	rgb(26, 39, 124)
HSL	hsl(232, 65%, 29%)
HSV	hsv(232, 79%, 49%)
CMYK	cmyk(79%, 68.5%, 0%, 51.4%)
CIE-LAB	lab(20.54, 27.17, -49.57)
CIE-LCH	lch(20.54, 56.53, 298.73°)
OKLab	oklab(32.58% -0.0013 -0.1434)
OKLCH	oklch(32.58% 0.143 269.5)
XYZ	xyz(4.7884, 3.1254, 19.4158)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A277C #7C6F1A

analogous

#1A587C #1A277C #3E1A7C

triadic

#1A277C #7C1A27 #277C1A

tetradic

#1A277C #7C1A58 #7C6F1A #1A7C3E

square

#1A277C #7C1A58 #7C6F1A #1A7C3E

split-complementary

#1A277C #7C3E1A #587C1A

monochromatic

#050819 #0F1749 #1A277C #2537AF #3B4FD6

Accessibility & contrast

On white

12.92

#1A277C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1A277C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A277C

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A277C	#FFFFFF	#000000	##FFFFFF
##1A277C	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367F

Deuteranopia (green-blind)

#002D7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1a277c;
/* rgb */ color: rgb(26, 39, 124);
/* oklch */ color: oklch(32.6% 0.143 269.5);

Tailwind

colors: {
  custom: {
    50: '#6861a3',
    500: '#1a277c',
    950: '#000000',
  },
}

SCSS

$custom: #1a277c;
$custom-light: #6861a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1a277c",
  "rgb": {
    "r": 26,
    "g": 39,
    "b": 124
  },
  "hsl": {
    "h": 232.041,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32585,
    "c": 0.14345,
    "h": 269.5
  },
  "luminance": 0.03126
}

Semantic roles & 50–950 ramp

primary

#1A277C

secondary

#B0A242

accent

#D240E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A277C

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

Preview Lab → · Contrast checker → · Palette generator →