#1A277D#1A277D

#1A277D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.145 H 269.4°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#1A277D
RGB	rgb(26, 39, 125)
HSL	hsl(232, 66%, 30%)
HSV	hsv(232, 79%, 49%)
CMYK	cmyk(79.2%, 68.8%, 0%, 51%)
CIE-LAB	lab(20.64, 27.56, -50.05)
CIE-LCH	lch(20.64, 57.13, 298.84°)
OKLab	oklab(32.69% -0.0014 -0.1448)
OKLCH	oklch(32.69% 0.145 269.4)
XYZ	xyz(4.8519, 3.1508, 19.7505)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A277D #7D701A

analogous

#1A597D #1A277D #3E1A7D

triadic

#1A277D #7D1A27 #277D1A

tetradic

#1A277D #7D1A59 #7D701A #1A7D3E

square

#1A277D #7D1A59 #7D701A #1A7D3E

split-complementary

#1A277D #7D3E1A #597D1A

monochromatic

#050819 #0F174A #1A277D #2537B0 #3B50D6

Accessibility & contrast

On white

12.88

#1A277D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1A277D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A277D

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A277D	#FFFFFF	#000000	##FFFFFF
##1A277D	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003680

Deuteranopia (green-blind)

#002D7B

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1a277d;
/* rgb */ color: rgb(26, 39, 125);
/* oklch */ color: oklch(32.7% 0.145 269.4);

Tailwind

colors: {
  custom: {
    50: '#6861a4',
    500: '#1a277d',
    950: '#000000',
  },
}

SCSS

$custom: #1a277d;
$custom-light: #6861a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1a277d",
  "rgb": {
    "r": 26,
    "g": 39,
    "b": 125
  },
  "hsl": {
    "h": 232.121,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.32687,
    "c": 0.14483,
    "h": 269.4
  },
  "luminance": 0.03151
}

Semantic roles & 50–950 ramp

primary

#1A277D

secondary

#B1A242

accent

#D23FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A277D

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

Preview Lab → · Contrast checker → · Palette generator →