#1C3574#1C3574

#1C3574 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.9% C 0.113 H 264.8°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#1C3574
RGB	rgb(28, 53, 116)
HSL	hsl(223, 61%, 28%)
HSV	hsv(223, 76%, 45%)
CMYK	cmyk(75.9%, 54.3%, 0%, 54.5%)
CIE-LAB	lab(23.85, 14.38, -39.08)
CIE-LCH	lch(23.85, 41.64, 290.19°)
OKLab	oklab(34.86% -0.0102 -0.1124)
OKLCH	oklch(34.86% 0.113 264.8)
XYZ	xyz(4.9033, 4.0535, 17.0436)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3574 #745B1C

analogous

#1C6174 #1C3574 #2F1C74

triadic

#1C3574 #741C35 #35741C

tetradic

#1C3574 #741C61 #745B1C #1C742F

square

#1C3574 #741C61 #745B1C #1C742F

split-complementary

#1C3574 #742F1C #61741C

monochromatic

#060B19 #101E43 #1C3574 #284CA5 #3B65D0

Accessibility & contrast

On white

11.60

#1C3574 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1C3574 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3574

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3574	#FFFFFF	#000000	##FFFFFF
##1C3574	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B3D76

Deuteranopia (green-blind)

#003573

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1c3574;
/* rgb */ color: rgb(28, 53, 116);
/* oklch */ color: oklch(34.9% 0.113 264.8);

Tailwind

colors: {
  custom: {
    50: '#656b9c',
    500: '#1c3574',
    950: '#000000',
  },
}

SCSS

$custom: #1c3574;
$custom-light: #656b9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3574",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 116
  },
  "hsl": {
    "h": 222.955,
    "s": 61.111,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34862,
    "c": 0.11288,
    "h": 264.8
  },
  "luminance": 0.04054
}

Semantic roles & 50–950 ramp

primary

#1C3574

secondary

#A88C43

accent

#B744E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C3574

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

Preview Lab → · Contrast checker → · Palette generator →