#1C337F#1C337F

#1C337F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.132 H 266.6°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#1C337F
RGB	rgb(28, 51, 127)
HSL	hsl(226, 64%, 30%)
HSV	hsv(226, 78%, 50%)
CMYK	cmyk(78%, 59.8%, 0%, 50.2%)
CIE-LAB	lab(24.15, 20.25, -45.57)
CIE-LCH	lch(24.15, 49.86, 293.96°)
OKLab	oklab(35.37% -0.0077 -0.1315)
OKLCH	oklch(35.37% 0.132 266.6)
XYZ	xyz(5.4921, 4.1462, 20.5854)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C337F #7F681C

analogous

#1C647F #1C337F #371C7F

triadic

#1C337F #7F1C33 #337F1C

tetradic

#1C337F #7F1C64 #7F681C #1C7F37

square

#1C337F #7F1C64 #7F681C #1C7F37

split-complementary

#1C337F #7F371C #647F1C

monochromatic

#060B1B #111F4D #1C337F #2747B1 #4063D5

Accessibility & contrast

On white

11.48

#1C337F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1C337F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C337F

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C337F	#FFFFFF	#000000	##FFFFFF
##1C337F	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	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: #1c337f;
/* rgb */ color: rgb(28, 51, 127);
/* oklch */ color: oklch(35.4% 0.132 266.6);

Tailwind

colors: {
  custom: {
    50: '#686aa5',
    500: '#1c337f',
    950: '#000000',
  },
}

SCSS

$custom: #1c337f;
$custom-light: #686aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c337f",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 127
  },
  "hsl": {
    "h": 226.061,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.35368,
    "c": 0.13174,
    "h": 266.6
  },
  "luminance": 0.04147
}

Semantic roles & 50–950 ramp

primary

#1C337F

secondary

#B39944

accent

#C041E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C337F

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

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