#1C337E#1C337E

#1C337E is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.130 H 266.6°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#1C337E
RGB	rgb(28, 51, 126)
HSL	hsl(226, 64%, 30%)
HSV	hsv(226, 78%, 49%)
CMYK	cmyk(77.8%, 59.5%, 0%, 50.6%)
CIE-LAB	lab(24.07, 19.84, -45.07)
CIE-LCH	lch(24.07, 49.25, 293.76°)
OKLab	oklab(35.28% -0.0078 -0.1301)
OKLCH	oklch(35.28% 0.13 266.6)
XYZ	xyz(5.4273, 4.1203, 20.2439)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C337E #7E671C

analogous

#1C647E #1C337E #361C7E

triadic

#1C337E #7E1C33 #337E1C

tetradic

#1C337E #7E1C64 #7E671C #1C7E36

square

#1C337E #7E1C64 #7E671C #1C7E36

split-complementary

#1C337E #7E361C #647E1C

monochromatic

#060A1A #111F4C #1C337E #2747B0 #4063D5

Accessibility & contrast

On white

11.51

#1C337E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1C337E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C337E

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C337E	#FFFFFF	#000000	##FFFFFF
##1C337E	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)

#003E81

Deuteranopia (green-blind)

#00357D

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1c337e;
/* rgb */ color: rgb(28, 51, 126);
/* oklch */ color: oklch(35.3% 0.130 266.6);

Tailwind

colors: {
  custom: {
    50: '#686aa4',
    500: '#1c337e',
    950: '#000000',
  },
}

SCSS

$custom: #1c337e;
$custom-light: #686aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c337e",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 126
  },
  "hsl": {
    "h": 225.918,
    "s": 63.636,
    "l": 30.196
  },
  "oklch": {
    "l": 0.35279,
    "c": 0.13029,
    "h": 266.6
  },
  "luminance": 0.04121
}

Semantic roles & 50–950 ramp

primary

#1C337E

secondary

#B29844

accent

#C041E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C337E

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

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