#1C308D#1C308D

#1C308D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.155 H 267.9°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1C308D
RGB	rgb(28, 48, 141)
HSL	hsl(229, 67%, 33%)
HSV	hsv(229, 80%, 55%)
CMYK	cmyk(80.1%, 66%, 0%, 44.7%)
CIE-LAB	lab(24.59, 27.86, -53.60)
CIE-LCH	lch(24.59, 60.41, 297.46°)
OKLab	oklab(36.08% -0.0057 -0.1551)
OKLCH	oklch(36.08% 0.155 267.9)
XYZ	xyz(6.3419, 4.2831, 25.6866)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C308D #8D791C

analogous

#1C688D #1C308D #411C8D

triadic

#1C308D #8D1C30 #308D1C

tetradic

#1C308D #8D1C68 #8D791C #1C8D41

square

#1C308D #8D1C68 #8D791C #1C8D41

split-complementary

#1C308D #8D411C #688D1C

monochromatic

#080D27 #121F5A #1C308D #2641C0 #4962DB

Accessibility & contrast

On white

11.31

#1C308D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1C308D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C308D

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C308D	#FFFFFF	#000000	##FFFFFF
##1C308D	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004090

Deuteranopia (green-blind)

#00358B

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c308d;
/* rgb */ color: rgb(28, 48, 141);
/* oklch */ color: oklch(36.1% 0.155 267.9);

Tailwind

colors: {
  custom: {
    50: '#6c68af',
    500: '#1c308d',
    950: '#000000',
  },
}

SCSS

$custom: #1c308d;
$custom-light: #6c68af;
$custom-dark: #000000;

JSON

{
  "hex": "#1c308d",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 141
  },
  "hsl": {
    "h": 229.381,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.36078,
    "c": 0.15523,
    "h": 267.9
  },
  "luminance": 0.04284
}

Semantic roles & 50–950 ramp

primary

#1C308D

secondary

#BDA848

accent

#CB3EEA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C308D

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

Preview Lab → · Contrast checker → · Palette generator →