#1C337C#1C337C

#1C337C is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.1% C 0.127 H 266.5°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#1C337C
RGB	rgb(28, 51, 124)
HSL	hsl(226, 63%, 30%)
HSV	hsv(226, 77%, 49%)
CMYK	cmyk(77.4%, 58.9%, 0%, 51.4%)
CIE-LAB	lab(23.90, 19.04, -44.08)
CIE-LCH	lch(23.90, 48.01, 293.36°)
OKLab	oklab(35.1% -0.0078 -0.1272)
OKLCH	oklch(35.1% 0.127 266.5)
XYZ	xyz(5.2995, 4.0692, 19.5710)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C337C #7C651C

analogous

#1C637C #1C337C #351C7C

triadic

#1C337C #7C1C33 #337C1C

tetradic

#1C337C #7C1C63 #7C651C #1C7C35

square

#1C337C #7C1C63 #7C651C #1C7C35

split-complementary

#1C337C #7C351C #637C1C

monochromatic

#060A19 #111E4A #1C337C #2748AE #3F62D4

Accessibility & contrast

On white

11.58

#1C337C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1C337C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C337C

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C337C	#FFFFFF	#000000	##FFFFFF
##1C337C	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7E

Deuteranopia (green-blind)

#00357B

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1c337c;
/* rgb */ color: rgb(28, 51, 124);
/* oklch */ color: oklch(35.1% 0.127 266.5);

Tailwind

colors: {
  custom: {
    50: '#686aa3',
    500: '#1c337c',
    950: '#000000',
  },
}

SCSS

$custom: #1c337c;
$custom-light: #686aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c337c",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 124
  },
  "hsl": {
    "h": 225.625,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.35102,
    "c": 0.12739,
    "h": 266.5
  },
  "luminance": 0.0407
}

Semantic roles & 50–950 ramp

primary

#1C337C

secondary

#B09644

accent

#BF42E6

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C337C

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

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