#1C4B90#1C4B90

#1C4B90 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.1% C 0.125 H 258.4°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1C4B90
RGB	rgb(28, 75, 144)
HSL	hsl(216, 67%, 34%)
HSV	hsv(216, 81%, 56%)
CMYK	cmyk(80.6%, 47.9%, 0%, 43.5%)
CIE-LAB	lab(32.46, 10.48, -42.66)
CIE-LCH	lch(32.46, 43.93, 283.81°)
OKLab	oklab(42.1% -0.0251 -0.1225)
OKLCH	oklch(42.1% 0.125 258.4)
XYZ	xyz(8.0272, 7.2917, 27.3645)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4B90 #90611C

analogous

#1C8590 #1C4B90 #271C90

triadic

#1C4B90 #901C4B #4B901C

tetradic

#1C4B90 #901C85 #90611C #1C9027

square

#1C4B90 #901C85 #90611C #1C9027

split-complementary

#1C4B90 #90271C #85901C

monochromatic

#08162A #12305D #1C4B90 #2666C3 #4A85DC

Accessibility & contrast

On white

8.54

#1C4B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1C4B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4B90

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4B90	#FFFFFF	#000000	##FFFFFF
##1C4B90	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255293

Deuteranopia (green-blind)

#04478F

Tritanopia (blue-blind)

#005B66

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1c4b90;
/* rgb */ color: rgb(28, 75, 144);
/* oklch */ color: oklch(42.1% 0.125 258.4);

Tailwind

colors: {
  custom: {
    50: '#6b7cb1',
    500: '#1c4b90',
    950: '#000000',
  },
}

SCSS

$custom: #1c4b90;
$custom-light: #6b7cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4b90",
  "rgb": {
    "r": 28,
    "g": 75,
    "b": 144
  },
  "hsl": {
    "h": 215.69,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.42096,
    "c": 0.12505,
    "h": 258.4
  },
  "luminance": 0.07293
}

Semantic roles & 50–950 ramp

primary

#1C4B90

secondary

#BE8F4A

accent

#A43DEA

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080911

muted

#7A7B80

Preview Lab

Preview with #1C4B90

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

Preview Lab → · Contrast checker → · Palette generator →