#1C3B89#1C3B89

#1C3B89 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.136 H 264.4°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#1C3B89
RGB	rgb(28, 59, 137)
HSL	hsl(223, 66%, 32%)
HSV	hsv(223, 80%, 54%)
CMYK	cmyk(79.6%, 56.9%, 0%, 46.3%)
CIE-LAB	lab(27.24, 18.67, -46.79)
CIE-LCH	lch(27.24, 50.37, 291.76°)
OKLab	oklab(37.95% -0.0132 -0.135)
OKLCH	oklch(37.95% 0.136 264.4)
XYZ	xyz(6.5566, 5.1802, 24.3164)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3B89 #896A1C

analogous

#1C7189 #1C3B89 #341C89

triadic

#1C3B89 #891C3B #3B891C

tetradic

#1C3B89 #891C71 #896A1C #1C8934

square

#1C3B89 #891C71 #896A1C #1C8934

split-complementary

#1C3B89 #89341C #71891C

monochromatic

#070F23 #122556 #1C3B89 #2651BC #4670D9

Accessibility & contrast

On white

10.31

#1C3B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1C3B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3B89

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3B89	#FFFFFF	#000000	##FFFFFF
##1C3B89	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468C

Deuteranopia (green-blind)

#003C87

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1c3b89;
/* rgb */ color: rgb(28, 59, 137);
/* oklch */ color: oklch(38.0% 0.136 264.4);

Tailwind

colors: {
  custom: {
    50: '#6a70ac',
    500: '#1c3b89',
    950: '#000000',
  },
}

SCSS

$custom: #1c3b89;
$custom-light: #6a70ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3b89",
  "rgb": {
    "r": 28,
    "g": 59,
    "b": 137
  },
  "hsl": {
    "h": 222.936,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.3795,
    "c": 0.1356,
    "h": 264.4
  },
  "luminance": 0.05181
}

Semantic roles & 50–950 ramp

primary

#1C3B89

secondary

#BB9A46

accent

#B93FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1C3B89

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

Preview Lab → · Contrast checker → · Palette generator →