#1C3D71#1C3D71

#1C3D71 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.5% C 0.098 H 259.2°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C3D71
RGB	rgb(28, 61, 113)
HSL	hsl(217, 60%, 28%)
HSV	hsv(217, 75%, 44%)
CMYK	cmyk(75.2%, 46%, 0%, 55.7%)
CIE-LAB	lab(26.09, 7.51, -33.57)
CIE-LCH	lch(26.09, 34.40, 282.61°)
OKLab	oklab(36.51% -0.0183 -0.096)
OKLCH	oklch(36.51% 0.098 259.2)
XYZ	xyz(5.1272, 4.7761, 16.2712)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3D71 #71501C

analogous

#1C6771 #1C3D71 #251C71

triadic

#1C3D71 #711C3D #3D711C

tetradic

#1C3D71 #711C67 #71501C #1C7125

square

#1C3D71 #711C67 #71501C #1C7125

split-complementary

#1C3D71 #71251C #67711C

monochromatic

#060D19 #102340 #1C3D71 #2857A2 #3973CE

Accessibility & contrast

On white

10.74

#1C3D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1C3D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3D71

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3D71	#FFFFFF	#000000	##FFFFFF
##1C3D71	1.00	10.74	1.96	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234273

Deuteranopia (green-blind)

#143A70

Tritanopia (blue-blind)

#004951

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1c3d71;
/* rgb */ color: rgb(28, 61, 113);
/* oklch */ color: oklch(36.5% 0.098 259.2);

Tailwind

colors: {
  custom: {
    50: '#64729a',
    500: '#1c3d71',
    950: '#000000',
  },
}

SCSS

$custom: #1c3d71;
$custom-light: #64729a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3d71",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 113
  },
  "hsl": {
    "h": 216.706,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36509,
    "c": 0.09777,
    "h": 259.2
  },
  "luminance": 0.04777
}

Semantic roles & 50–950 ramp

primary

#1C3D71

secondary

#A67F43

accent

#A644E3

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1C3D71

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

Preview Lab → · Contrast checker → · Palette generator →