#1C4589#1C4589

#1C4589 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.2% C 0.123 H 260.0°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#1C4589
RGB	rgb(28, 69, 137)
HSL	hsl(217, 66%, 32%)
HSV	hsv(217, 80%, 54%)
CMYK	cmyk(79.6%, 49.6%, 0%, 46.3%)
CIE-LAB	lab(30.18, 11.74, -42.04)
CIE-LCH	lch(30.18, 43.65, 285.60°)
OKLab	oklab(40.18% -0.0213 -0.1208)
OKLCH	oklch(40.18% 0.123 260)
XYZ	xyz(7.1207, 6.3084, 24.5044)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4589 #89601C

analogous

#1C7C89 #1C4589 #291C89

triadic

#1C4589 #891C45 #45891C

tetradic

#1C4589 #891C7C #89601C #1C8929

square

#1C4589 #891C7C #89601C #1C8929

split-complementary

#1C4589 #89291C #7C891C

monochromatic

#071223 #122B56 #1C4589 #265FBC #467DD9

Accessibility & contrast

On white

9.28

#1C4589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1C4589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4589

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4589	#FFFFFF	#000000	##FFFFFF
##1C4589	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4C8C

Deuteranopia (green-blind)

#004288

Tritanopia (blue-blind)

#005560

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1c4589;
/* rgb */ color: rgb(28, 69, 137);
/* oklch */ color: oklch(40.2% 0.123 260.0);

Tailwind

colors: {
  custom: {
    50: '#6a78ac',
    500: '#1c4589',
    950: '#000000',
  },
}

SCSS

$custom: #1c4589;
$custom-light: #6a78ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4589",
  "rgb": {
    "r": 28,
    "g": 69,
    "b": 137
  },
  "hsl": {
    "h": 217.431,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.40185,
    "c": 0.12265,
    "h": 260
  },
  "luminance": 0.06309
}

Semantic roles & 50–950 ramp

primary

#1C4589

secondary

#BB8F46

accent

#A93FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C4589

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

Preview Lab → · Contrast checker → · Palette generator →