#1C377A#1C377A

#1C377A is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.8% C 0.119 H 264.6°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#1C377A
RGB	rgb(28, 55, 122)
HSL	hsl(223, 63%, 29%)
HSV	hsv(223, 77%, 48%)
CMYK	cmyk(77%, 54.9%, 0%, 52.2%)
CIE-LAB	lab(24.90, 15.40, -41.19)
CIE-LCH	lch(24.90, 43.97, 290.50°)
OKLab	oklab(35.81% -0.0113 -0.1186)
OKLCH	oklch(35.81% 0.119 264.6)
XYZ	xyz(5.3567, 4.3838, 18.9724)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C377A #7A5F1C

analogous

#1C667A #1C377A #301C7A

triadic

#1C377A #7A1C37 #377A1C

tetradic

#1C377A #7A1C66 #7A5F1C #1C7A30

square

#1C377A #7A1C66 #7A5F1C #1C7A30

split-complementary

#1C377A #7A301C #667A1C

monochromatic

#060B19 #112148 #1C377A #274DAC #3E69D3

Accessibility & contrast

On white

11.19

#1C377A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1C377A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C377A

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C377A	#FFFFFF	#000000	##FFFFFF
##1C377A	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07407C

Deuteranopia (green-blind)

#003779

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c377a;
/* rgb */ color: rgb(28, 55, 122);
/* oklch */ color: oklch(35.8% 0.119 264.6);

Tailwind

colors: {
  custom: {
    50: '#676da1',
    500: '#1c377a',
    950: '#000000',
  },
}

SCSS

$custom: #1c377a;
$custom-light: #676da1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c377a",
  "rgb": {
    "r": 28,
    "g": 55,
    "b": 122
  },
  "hsl": {
    "h": 222.766,
    "s": 62.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.35808,
    "c": 0.11911,
    "h": 264.6
  },
  "luminance": 0.04384
}

Semantic roles & 50–950 ramp

primary

#1C377A

secondary

#AE8F44

accent

#B742E6

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1C377A

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

Preview Lab → · Contrast checker → · Palette generator →