#1C437B#1C437B

#1C437B is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.7% C 0.105 H 257.9°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#1C437B
RGB	rgb(28, 67, 123)
HSL	hsl(215, 63%, 30%)
HSV	hsv(215, 77%, 48%)
CMYK	cmyk(77.2%, 45.5%, 0%, 51.8%)
CIE-LAB	lab(28.62, 7.43, -35.83)
CIE-LCH	lch(28.62, 36.60, 281.71°)
OKLab	oklab(38.68% -0.0221 -0.1026)
OKLCH	oklch(38.68% 0.105 257.9)
XYZ	xyz(6.0599, 5.6906, 19.5141)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C437B #7B541C

analogous

#1C737B #1C437B #241C7B

triadic

#1C437B #7B1C43 #437B1C

tetradic

#1C437B #7B1C73 #7B541C #1C7B24

square

#1C437B #7B1C73 #7B541C #1C7B24

split-complementary

#1C437B #7B241C #737B1C

monochromatic

#060E19 #112849 #1C437B #275EAD #3E7BD3

Accessibility & contrast

On white

9.82

#1C437B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1C437B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C437B

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C437B	#FFFFFF	#000000	##FFFFFF
##1C437B	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27487D

Deuteranopia (green-blind)

#153F7A

Tritanopia (blue-blind)

#005059

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c437b;
/* rgb */ color: rgb(28, 67, 123);
/* oklch */ color: oklch(38.7% 0.105 257.9);

Tailwind

colors: {
  custom: {
    50: '#6776a1',
    500: '#1c437b',
    950: '#000000',
  },
}

SCSS

$custom: #1c437b;
$custom-light: #6776a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c437b",
  "rgb": {
    "r": 28,
    "g": 67,
    "b": 123
  },
  "hsl": {
    "h": 215.368,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.38678,
    "c": 0.10493,
    "h": 257.9
  },
  "luminance": 0.05691
}

Semantic roles & 50–950 ramp

primary

#1C437B

secondary

#AF8344

accent

#A342E6

background

#F6F7FA

surface

#EBEDF3

border

#C6C8CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C437B

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

Preview Lab → · Contrast checker → · Palette generator →