#1C3BA8#1C3BA8

#1C3BA8 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.178 H 266.0°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#1C3BA8
RGB	rgb(28, 59, 168)
HSL	hsl(227, 71%, 38%)
HSV	hsv(227, 83%, 66%)
CMYK	cmyk(83.3%, 64.9%, 0%, 34.1%)
CIE-LAB	lab(29.91, 30.90, -61.35)
CIE-LCH	lch(29.91, 68.69, 296.74°)
OKLab	oklab(40.77% -0.0125 -0.1777)
OKLCH	oklch(40.77% 0.178 266)
XYZ	xyz(9.1083, 6.2009, 37.7550)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3BA8 #A8891C

analogous

#1C81A8 #1C3BA8 #431CA8

triadic

#1C3BA8 #A81C3B #3BA81C

tetradic

#1C3BA8 #A81C81 #A8891C #1CA843

square

#1C3BA8 #A81C81 #A8891C #1CA843

split-complementary

#1C3BA8 #A8431C #81A81C

monochromatic

#0B163F #132974 #1C3BA8 #264EDB #5B79E4

Accessibility & contrast

On white

9.37

#1C3BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1C3BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3BA8

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3BA8	#FFFFFF	#000000	##FFFFFF
##1C3BA8	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1c3ba8;
/* rgb */ color: rgb(28, 59, 168);
/* oklch */ color: oklch(40.8% 0.178 266.0);

Tailwind

colors: {
  custom: {
    50: '#7370c3',
    500: '#1c3ba8',
    950: '#000000',
  },
}

SCSS

$custom: #1c3ba8;
$custom-light: #7370c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3ba8",
  "rgb": {
    "r": 28,
    "g": 59,
    "b": 168
  },
  "hsl": {
    "h": 226.714,
    "s": 71.429,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40771,
    "c": 0.1781,
    "h": 266
  },
  "luminance": 0.06202
}

Semantic roles & 50–950 ramp

primary

#1C3BA8

secondary

#C7AF58

accent

#C63AEE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1C3BA8

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

Preview Lab → · Contrast checker → · Palette generator →