#1C4582#1C4582

#1C4582 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.7% C 0.113 H 258.5°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#1C4582
RGB	rgb(28, 69, 130)
HSL	hsl(216, 65%, 31%)
HSV	hsv(216, 78%, 51%)
CMYK	cmyk(78.5%, 46.9%, 0%, 49%)
CIE-LAB	lab(29.70, 8.90, -38.47)
CIE-LCH	lch(29.70, 39.49, 283.02°)
OKLab	oklab(39.66% -0.0225 -0.1103)
OKLCH	oklch(39.66% 0.113 258.5)
XYZ	xyz(6.6348, 6.1141, 21.9452)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4582 #82591C

analogous

#1C7882 #1C4582 #261C82

triadic

#1C4582 #821C45 #45821C

tetradic

#1C4582 #821C78 #82591C #1C8226

square

#1C4582 #821C78 #82591C #1C8226

split-complementary

#1C4582 #82261C #78821C

monochromatic

#06101D #112A50 #1C4582 #2760B4 #427ED6

Accessibility & contrast

On white

9.45

#1C4582 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1C4582 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4582

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4582	#FFFFFF	#000000	##FFFFFF
##1C4582	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254B84

Deuteranopia (green-blind)

#0F4281

Tritanopia (blue-blind)

#00535D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1c4582;
/* rgb */ color: rgb(28, 69, 130);
/* oklch */ color: oklch(39.7% 0.113 258.5);

Tailwind

colors: {
  custom: {
    50: '#6878a7',
    500: '#1c4582',
    950: '#000000',
  },
}

SCSS

$custom: #1c4582;
$custom-light: #6878a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4582",
  "rgb": {
    "r": 28,
    "g": 69,
    "b": 130
  },
  "hsl": {
    "h": 215.882,
    "s": 64.557,
    "l": 30.98
  },
  "oklch": {
    "l": 0.39662,
    "c": 0.11257,
    "h": 258.5
  },
  "luminance": 0.06115
}

Semantic roles & 50–950 ramp

primary

#1C4582

secondary

#B58844

accent

#A440E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C4582

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

Preview Lab → · Contrast checker → · Palette generator →