#1C3F90#1C3F90

#1C3F90 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.140 H 263.6°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F90
RGB	rgb(28, 63, 144)
HSL	hsl(222, 67%, 34%)
HSV	hsv(222, 81%, 56%)
CMYK	cmyk(80.6%, 56.3%, 0%, 43.5%)
CIE-LAB	lab(28.94, 18.72, -48.35)
CIE-LCH	lch(28.94, 51.85, 291.16°)
OKLab	oklab(39.41% -0.0156 -0.1395)
OKLCH	oklch(39.41% 0.14 263.6)
XYZ	xyz(7.2886, 5.8147, 27.1183)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F90 #906D1C

analogous

#1C7990 #1C3F90 #331C90

triadic

#1C3F90 #901C3F #3F901C

tetradic

#1C3F90 #901C79 #906D1C #1C9033

square

#1C3F90 #901C79 #906D1C #1C9033

split-complementary

#1C3F90 #90331C #79901C

monochromatic

#08122A #12295D #1C3F90 #2655C3 #4A76DC

Accessibility & contrast

On white

9.71

#1C3F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1C3F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F90

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F90	#FFFFFF	#000000	##FFFFFF
##1C3F90	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A93

Deuteranopia (green-blind)

#003F8E

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c3f90;
/* rgb */ color: rgb(28, 63, 144);
/* oklch */ color: oklch(39.4% 0.140 263.6);

Tailwind

colors: {
  custom: {
    50: '#6c73b1',
    500: '#1c3f90',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f90;
$custom-light: #6c73b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f90",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 144
  },
  "hsl": {
    "h": 221.897,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.39407,
    "c": 0.14036,
    "h": 263.6
  },
  "luminance": 0.05816
}

Semantic roles & 50–950 ramp

primary

#1C3F90

secondary

#BE9B4A

accent

#B63DEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1C3F90

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

Preview Lab → · Contrast checker → · Palette generator →