#1A237A#1A237A

#1A237A is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.6% C 0.146 H 270.5°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1A237A
RGB	rgb(26, 35, 122)
HSL	hsl(234, 65%, 29%)
HSV	hsv(234, 79%, 48%)
CMYK	cmyk(78.7%, 71.3%, 0%, 52.2%)
CIE-LAB	lab(19.33, 29.10, -50.28)
CIE-LCH	lch(19.33, 58.09, 300.06°)
OKLab	oklab(31.65% 0.0012 -0.1455)
OKLCH	oklch(31.65% 0.146 270.5)
XYZ	xyz(4.5387, 2.8263, 18.7149)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A237A #7A711A

analogous

#1A537A #1A237A #411A7A

triadic

#1A237A #7A1A23 #237A1A

tetradic

#1A237A #7A1A53 #7A711A #1A7A41

square

#1A237A #7A1A53 #7A711A #1A7A41

split-complementary

#1A237A #7A411A #537A1A

monochromatic

#050719 #0F1548 #1A237A #2531AC #3948D5

Accessibility & contrast

On white

13.42

#1A237A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1A237A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A237A

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A237A	#FFFFFF	#000000	##FFFFFF
##1A237A	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337D

Deuteranopia (green-blind)

#002A78

Tritanopia (blue-blind)

#003B4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1a237a;
/* rgb */ color: rgb(26, 35, 122);
/* oklch */ color: oklch(31.6% 0.146 270.5);

Tailwind

colors: {
  custom: {
    50: '#685ea1',
    500: '#1a237a',
    950: '#000000',
  },
}

SCSS

$custom: #1a237a;
$custom-light: #685ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#1a237a",
  "rgb": {
    "r": 26,
    "g": 35,
    "b": 122
  },
  "hsl": {
    "h": 234.375,
    "s": 64.865,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31648,
    "c": 0.14553,
    "h": 270.5
  },
  "luminance": 0.02827
}

Semantic roles & 50–950 ramp

primary

#1A237A

secondary

#AEA441

accent

#D840E8

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1A237A

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

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