#1A177E#1A177E

#1A177E is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.2% C 0.163 H 272.1°. Best body text is #FFFFFF at 14.31:1 contrast (WCAG AA passes).

Color values

HEX	#1A177E
RGB	rgb(26, 23, 126)
HSL	hsl(242, 69%, 29%)
HSV	hsv(242, 82%, 49%)
CMYK	cmyk(79.4%, 81.7%, 0%, 50.6%)
CIE-LAB	lab(17.17, 37.86, -56.40)
CIE-LCH	lch(17.17, 67.93, 303.87°)
OKLab	oklab(30.24% 0.006 -0.1632)
OKLCH	oklch(30.24% 0.163 272.1)
XYZ	xyz(4.4970, 2.3383, 19.9489)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A177E #7B7E17

analogous

#17487E #1A177E #4E177E

triadic

#1A177E #7E1A17 #177E1A

tetradic

#1A177E #7E1748 #7B7E17 #177E4E

square

#1A177E #7E1748 #7B7E17 #177E4E

split-complementary

#1A177E #7E4E17 #487E17

monochromatic

#05051A #0F0E4A #1A177E #2520B2 #3A35DA

Accessibility & contrast

On white

14.31

#1A177E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1A177E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A177E

14.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A177E	#FFFFFF	#000000	##FFFFFF
##1A177E	1.00	14.31	1.47	14.31
#FFFFFF	14.31	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F81

Deuteranopia (green-blind)

#00257C

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1a177e;
/* rgb */ color: rgb(26, 23, 126);
/* oklch */ color: oklch(30.2% 0.163 272.1);

Tailwind

colors: {
  custom: {
    50: '#6a56a5',
    500: '#1a177e',
    950: '#000000',
  },
}

SCSS

$custom: #1a177e;
$custom-light: #6a56a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a177e",
  "rgb": {
    "r": 26,
    "g": 23,
    "b": 126
  },
  "hsl": {
    "h": 241.748,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30241,
    "c": 0.16335,
    "h": 272.1
  },
  "luminance": 0.02339
}

Semantic roles & 50–950 ramp

primary

#1A177E

secondary

#AFB33E

accent

#EC3CE7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1A177E

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

Preview Lab → · Contrast checker → · Palette generator →