#1A237F#1A237F

#1A237F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.2% C 0.152 H 270.2°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#1A237F
RGB	rgb(26, 35, 127)
HSL	hsl(235, 66%, 30%)
HSV	hsv(235, 80%, 50%)
CMYK	cmyk(79.5%, 72.4%, 0%, 50.2%)
CIE-LAB	lab(19.86, 30.98, -52.60)
CIE-LCH	lch(19.86, 61.05, 300.50°)
OKLab	oklab(32.18% 0.0006 -0.1523)
OKLCH	oklch(32.18% 0.152 270.2)
XYZ	xyz(4.8565, 2.9534, 20.3887)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A237F #7F761A

analogous

#1A567F #1A237F #431A7F

triadic

#1A237F #7F1A23 #237F1A

tetradic

#1A237F #7F1A56 #7F761A #1A7F43

square

#1A237F #7F1A56 #7F761A #1A7F43

split-complementary

#1A237F #7F431A #567F1A

monochromatic

#050719 #10154C #1A237F #2431B2 #3C4AD7

Accessibility & contrast

On white

13.20

#1A237F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1A237F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A237F

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A237F	#FFFFFF	#000000	##FFFFFF
##1A237F	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003582

Deuteranopia (green-blind)

#002B7D

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1a237f;
/* rgb */ color: rgb(26, 35, 127);
/* oklch */ color: oklch(32.2% 0.152 270.2);

Tailwind

colors: {
  custom: {
    50: '#695ea5',
    500: '#1a237f',
    950: '#000000',
  },
}

SCSS

$custom: #1a237f;
$custom-light: #695ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a237f",
  "rgb": {
    "r": 26,
    "g": 35,
    "b": 127
  },
  "hsl": {
    "h": 234.653,
    "s": 66.013,
    "l": 30
  },
  "oklch": {
    "l": 0.32182,
    "c": 0.15229,
    "h": 270.2
  },
  "luminance": 0.02954
}

Semantic roles & 50–950 ramp

primary

#1A237F

secondary

#B3A942

accent

#DA3FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1A237F

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

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