#1C3E81#1C3E81

#1C3E81 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.0% C 0.120 H 262.1°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#1C3E81
RGB	rgb(28, 62, 129)
HSL	hsl(220, 64%, 31%)
HSV	hsv(220, 78%, 51%)
CMYK	cmyk(78.3%, 51.9%, 0%, 49.4%)
CIE-LAB	lab(27.51, 13.33, -41.37)
CIE-LCH	lch(27.51, 43.47, 287.86°)
OKLab	oklab(37.96% -0.0165 -0.119)
OKLCH	oklch(37.96% 0.12 262.1)
XYZ	xyz(6.1625, 5.2764, 21.4583)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3E81 #815F1C

analogous

#1C7081 #1C3E81 #2C1C81

triadic

#1C3E81 #811C3E #3E811C

tetradic

#1C3E81 #811C70 #815F1C #1C812C

square

#1C3E81 #811C70 #815F1C #1C812C

split-complementary

#1C3E81 #812C1C #70811C

monochromatic

#060E1C #11264F #1C3E81 #2756B3 #4273D6

Accessibility & contrast

On white

10.22

#1C3E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1C3E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3E81

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3E81	#FFFFFF	#000000	##FFFFFF
##1C3E81	1.00	10.22	2.06	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154683

Deuteranopia (green-blind)

#003D80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1c3e81;
/* rgb */ color: rgb(28, 62, 129);
/* oklch */ color: oklch(38.0% 0.120 262.1);

Tailwind

colors: {
  custom: {
    50: '#6872a6',
    500: '#1c3e81',
    950: '#000000',
  },
}

SCSS

$custom: #1c3e81;
$custom-light: #6872a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3e81",
  "rgb": {
    "r": 28,
    "g": 62,
    "b": 129
  },
  "hsl": {
    "h": 219.802,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37958,
    "c": 0.12012,
    "h": 262.1
  },
  "luminance": 0.05277
}

Semantic roles & 50–950 ramp

primary

#1C3E81

secondary

#B48F44

accent

#AF40E7

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C3E81

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

Preview Lab → · Contrast checker → · Palette generator →