#1C437F#1C437F

#1C437F is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.0% C 0.111 H 258.9°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#1C437F
RGB	rgb(28, 67, 127)
HSL	hsl(216, 64%, 30%)
HSV	hsv(216, 78%, 50%)
CMYK	cmyk(78%, 47.2%, 0%, 50.2%)
CIE-LAB	lab(28.88, 9.05, -37.91)
CIE-LCH	lch(28.88, 38.98, 283.43°)
OKLab	oklab(38.97% -0.0213 -0.1087)
OKLCH	oklch(38.97% 0.111 258.9)
XYZ	xyz(6.3154, 5.7928, 20.8598)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C437F #7F581C

analogous

#1C747F #1C437F #271C7F

triadic

#1C437F #7F1C43 #437F1C

tetradic

#1C437F #7F1C74 #7F581C #1C7F27

square

#1C437F #7F1C74 #7F581C #1C7F27

split-complementary

#1C437F #7F271C #747F1C

monochromatic

#060E1B #11294D #1C437F #275DB1 #407BD5

Accessibility & contrast

On white

9.73

#1C437F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1C437F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C437F

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C437F	#FFFFFF	#000000	##FFFFFF
##1C437F	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244981

Deuteranopia (green-blind)

#0D407E

Tritanopia (blue-blind)

#00515A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c437f;
/* rgb */ color: rgb(28, 67, 127);
/* oklch */ color: oklch(39.0% 0.111 258.9);

Tailwind

colors: {
  custom: {
    50: '#6776a4',
    500: '#1c437f',
    950: '#000000',
  },
}

SCSS

$custom: #1c437f;
$custom-light: #6776a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c437f",
  "rgb": {
    "r": 28,
    "g": 67,
    "b": 127
  },
  "hsl": {
    "h": 216.364,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.38969,
    "c": 0.11075,
    "h": 258.9
  },
  "luminance": 0.05793
}

Semantic roles & 50–950 ramp

primary

#1C437F

secondary

#B38744

accent

#A641E7

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C437F

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

Preview Lab → · Contrast checker → · Palette generator →