#1A277F#1A277F

#1A277F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.148 H 269.4°. Best body text is #FFFFFF at 12.80:1 contrast (WCAG AA passes).

Color values

HEX	#1A277F
RGB	rgb(26, 39, 127)
HSL	hsl(232, 66%, 30%)
HSV	hsv(232, 80%, 50%)
CMYK	cmyk(79.5%, 69.3%, 0%, 50.2%)
CIE-LAB	lab(20.84, 28.33, -50.99)
CIE-LCH	lch(20.84, 58.33, 299.06°)
OKLab	oklab(32.89% -0.0015 -0.1476)
OKLCH	oklch(32.89% 0.148 269.4)
XYZ	xyz(4.9810, 3.2024, 20.4302)
Luminance	0.0320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A277F #7F721A

analogous

#1A5A7F #1A277F #3F1A7F

triadic

#1A277F #7F1A27 #277F1A

tetradic

#1A277F #7F1A5A #7F721A #1A7F3F

square

#1A277F #7F1A5A #7F721A #1A7F3F

split-complementary

#1A277F #7F3F1A #5A7F1A

monochromatic

#050819 #10174C #1A277F #2437B2 #3C50D7

Accessibility & contrast

On white

12.80

#1A277F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1A277F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A277F

12.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A277F	#FFFFFF	#000000	##FFFFFF
##1A277F	1.00	12.80	1.64	12.80
#FFFFFF	12.80	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003782

Deuteranopia (green-blind)

#002D7D

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1a277f;
/* rgb */ color: rgb(26, 39, 127);
/* oklch */ color: oklch(32.9% 0.148 269.4);

Tailwind

colors: {
  custom: {
    50: '#6961a5',
    500: '#1a277f',
    950: '#000000',
  },
}

SCSS

$custom: #1a277f;
$custom-light: #6961a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a277f",
  "rgb": {
    "r": 26,
    "g": 39,
    "b": 127
  },
  "hsl": {
    "h": 232.277,
    "s": 66.013,
    "l": 30
  },
  "oklch": {
    "l": 0.32893,
    "c": 0.14758,
    "h": 269.4
  },
  "luminance": 0.03203
}

Semantic roles & 50–950 ramp

primary

#1A277F

secondary

#B3A442

accent

#D33FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A277F

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

Preview Lab → · Contrast checker → · Palette generator →