#1C358F#1C358F

#1C358F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.152 H 266.7°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C358F
RGB	rgb(28, 53, 143)
HSL	hsl(227, 67%, 34%)
HSV	hsv(227, 80%, 56%)
CMYK	cmyk(80.4%, 62.9%, 0%, 43.9%)
CIE-LAB	lab(26.09, 25.23, -52.39)
CIE-LCH	lch(26.09, 58.14, 295.71°)
OKLab	oklab(37.24% -0.0088 -0.1515)
OKLCH	oklch(37.24% 0.152 266.7)
XYZ	xyz(6.7082, 4.7755, 26.5495)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C358F #8F761C

analogous

#1C6E8F #1C358F #3D1C8F

triadic

#1C358F #8F1C35 #358F1C

tetradic

#1C358F #8F1C6E #8F761C #1C8F3D

square

#1C358F #8F1C6E #8F761C #1C8F3D

split-complementary

#1C358F #8F3D1C #6E8F1C

monochromatic

#080F29 #12225C #1C358F #2648C2 #4A6ADC

Accessibility & contrast

On white

10.74

#1C358F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1C358F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C358F

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C358F	#FFFFFF	#000000	##FFFFFF
##1C358F	1.00	10.74	1.96	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004392

Deuteranopia (green-blind)

#00388D

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1c358f;
/* rgb */ color: rgb(28, 53, 143);
/* oklch */ color: oklch(37.2% 0.152 266.7);

Tailwind

colors: {
  custom: {
    50: '#6c6cb1',
    500: '#1c358f',
    950: '#000000',
  },
}

SCSS

$custom: #1c358f;
$custom-light: #6c6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c358f",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 143
  },
  "hsl": {
    "h": 226.957,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37242,
    "c": 0.15176,
    "h": 266.7
  },
  "luminance": 0.04776
}

Semantic roles & 50–950 ramp

primary

#1C358F

secondary

#BEA449

accent

#C53EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1C358F

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

Preview Lab → · Contrast checker → · Palette generator →