#1C359F#1C359F

#1C359F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.8% C 0.173 H 267.0°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#1C359F
RGB	rgb(28, 53, 159)
HSL	hsl(229, 70%, 37%)
HSV	hsv(229, 82%, 62%)
CMYK	cmyk(82.4%, 66.7%, 0%, 37.6%)
CIE-LAB	lab(27.56, 31.43, -59.77)
CIE-LCH	lch(27.56, 67.53, 297.74°)
OKLab	oklab(38.78% -0.0092 -0.1731)
OKLCH	oklch(38.78% 0.173 267)
XYZ	xyz(8.0078, 5.2953, 33.3942)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C359F #9F861C

analogous

#1C779F #1C359F #451C9F

triadic

#1C359F #9F1C35 #359F1C

tetradic

#1C359F #9F1C77 #9F861C #1C9F45

square

#1C359F #9F1C77 #9F861C #1C9F45

split-complementary

#1C359F #9F451C #779F1C

monochromatic

#0A1237 #13246B #1C359F #2546D3 #546FE1

Accessibility & contrast

On white

10.20

#1C359F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1C359F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C359F

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C359F	#FFFFFF	#000000	##FFFFFF
##1C359F	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A2

Deuteranopia (green-blind)

#003B9D

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1c359f;
/* rgb */ color: rgb(28, 53, 159);
/* oklch */ color: oklch(38.8% 0.173 267.0);

Tailwind

colors: {
  custom: {
    50: '#716cbc',
    500: '#1c359f',
    950: '#000000',
  },
}

SCSS

$custom: #1c359f;
$custom-light: #716cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c359f",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 159
  },
  "hsl": {
    "h": 228.55,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.38783,
    "c": 0.17335,
    "h": 267
  },
  "luminance": 0.05296
}

Semantic roles & 50–950 ramp

primary

#1C359F

secondary

#C4AE53

accent

#CB3BED

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C359F

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

Preview Lab → · Contrast checker → · Palette generator →