#1C4BA1#1C4BA1

#1C4BA1 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.4% C 0.149 H 261.2°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#1C4BA1
RGB	rgb(28, 75, 161)
HSL	hsl(219, 70%, 37%)
HSV	hsv(219, 83%, 63%)
CMYK	cmyk(82.6%, 53.4%, 0%, 36.9%)
CIE-LAB	lab(33.67, 17.34, -51.01)
CIE-LCH	lch(33.67, 53.88, 288.77°)
OKLab	oklab(43.41% -0.0227 -0.1471)
OKLCH	oklch(43.41% 0.149 261.2)
XYZ	xyz(9.4257, 7.8511, 34.7299)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4BA1 #A1721C

analogous

#1C8EA1 #1C4BA1 #301CA1

triadic

#1C4BA1 #A11C4B #4BA11C

tetradic

#1C4BA1 #A11C8E #A1721C #1CA130

square

#1C4BA1 #A11C8E #A1721C #1CA130

split-complementary

#1C4BA1 #A1301C #8EA11C

monochromatic

#0A1A39 #13336D #1C4BA1 #2563D5 #5687E2

Accessibility & contrast

On white

8.17

#1C4BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1C4BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4BA1

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4BA1	#FFFFFF	#000000	##FFFFFF
##1C4BA1	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0956A4

Deuteranopia (green-blind)

#00499F

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c4ba1;
/* rgb */ color: rgb(28, 75, 161);
/* oklch */ color: oklch(43.4% 0.149 261.2);

Tailwind

colors: {
  custom: {
    50: '#707cbd',
    500: '#1c4ba1',
    950: '#000000',
  },
}

SCSS

$custom: #1c4ba1;
$custom-light: #707cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4ba1",
  "rgb": {
    "r": 28,
    "g": 75,
    "b": 161
  },
  "hsl": {
    "h": 218.797,
    "s": 70.37,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43407,
    "c": 0.14882,
    "h": 261.2
  },
  "luminance": 0.07852
}

Semantic roles & 50–950 ramp

primary

#1C4BA1

secondary

#C59D54

accent

#AE3BED

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1C4BA1

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

Preview Lab → · Contrast checker → · Palette generator →