#1A337F#1A337F

#1A337F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.132 H 265.9°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#1A337F
RGB	rgb(26, 51, 127)
HSL	hsl(225, 66%, 30%)
HSV	hsv(225, 80%, 50%)
CMYK	cmyk(79.5%, 59.8%, 0%, 50.2%)
CIE-LAB	lab(24.06, 20.00, -45.71)
CIE-LCH	lch(24.06, 49.90, 293.63°)
OKLab	oklab(35.28% -0.0095 -0.132)
OKLCH	oklch(35.28% 0.132 265.9)
XYZ	xyz(5.4392, 4.1190, 20.5829)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A337F #7F661A

analogous

#1A657F #1A337F #341A7F

triadic

#1A337F #7F1A33 #337F1A

tetradic

#1A337F #7F1A65 #7F661A #1A7F34

square

#1A337F #7F1A65 #7F661A #1A7F34

split-complementary

#1A337F #7F341A #657F1A

monochromatic

#050A19 #101F4C #1A337F #2447B2 #3C63D7

Accessibility & contrast

On white

11.51

#1A337F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1A337F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A337F

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A337F	#FFFFFF	#000000	##FFFFFF
##1A337F	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E82

Deuteranopia (green-blind)

#00357E

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1a337f;
/* rgb */ color: rgb(26, 51, 127);
/* oklch */ color: oklch(35.3% 0.132 265.9);

Tailwind

colors: {
  custom: {
    50: '#686aa5',
    500: '#1a337f',
    950: '#000000',
  },
}

SCSS

$custom: #1a337f;
$custom-light: #686aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a337f",
  "rgb": {
    "r": 26,
    "g": 51,
    "b": 127
  },
  "hsl": {
    "h": 225.149,
    "s": 66.013,
    "l": 30
  },
  "oklch": {
    "l": 0.35277,
    "c": 0.13232,
    "h": 265.9
  },
  "luminance": 0.0412
}

Semantic roles & 50–950 ramp

primary

#1A337F

secondary

#B39742

accent

#BF3FE9

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A337F

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

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