#1A237D#1A237D

#1A237D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.150 H 270.3°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#1A237D
RGB	rgb(26, 35, 125)
HSL	hsl(235, 66%, 30%)
HSV	hsv(235, 79%, 49%)
CMYK	cmyk(79.2%, 72%, 0%, 51%)
CIE-LAB	lab(19.65, 30.23, -51.68)
CIE-LCH	lch(19.65, 59.87, 300.33°)
OKLab	oklab(31.97% 0.0009 -0.1496)
OKLCH	oklch(31.97% 0.15 270.3)
XYZ	xyz(4.7274, 2.9018, 19.7090)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A237D #7D741A

analogous

#1A557D #1A237D #421A7D

triadic

#1A237D #7D1A23 #237D1A

tetradic

#1A237D #7D1A55 #7D741A #1A7D42

square

#1A237D #7D1A55 #7D741A #1A7D42

split-complementary

#1A237D #7D421A #557D1A

monochromatic

#050719 #0F154A #1A237D #2531B0 #3B49D6

Accessibility & contrast

On white

13.29

#1A237D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1A237D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A237D

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A237D	#FFFFFF	#000000	##FFFFFF
##1A237D	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003480

Deuteranopia (green-blind)

#002B7B

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1a237d;
/* rgb */ color: rgb(26, 35, 125);
/* oklch */ color: oklch(32.0% 0.150 270.3);

Tailwind

colors: {
  custom: {
    50: '#695ea4',
    500: '#1a237d',
    950: '#000000',
  },
}

SCSS

$custom: #1a237d;
$custom-light: #695ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1a237d",
  "rgb": {
    "r": 26,
    "g": 35,
    "b": 125
  },
  "hsl": {
    "h": 234.545,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31967,
    "c": 0.14959,
    "h": 270.3
  },
  "luminance": 0.02902
}

Semantic roles & 50–950 ramp

primary

#1A237D

secondary

#B1A742

accent

#D93FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1A237D

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

Preview Lab → · Contrast checker → · Palette generator →