#1C238D#1C238D

#1C238D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.8% C 0.170 H 270.3°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#1C238D
RGB	rgb(28, 35, 141)
HSL	hsl(236, 67%, 33%)
HSV	hsv(236, 80%, 55%)
CMYK	cmyk(80.1%, 75.2%, 0%, 44.7%)
CIE-LAB	lab(21.47, 36.29, -58.73)
CIE-LCH	lch(21.47, 69.03, 301.72°)
OKLab	oklab(33.82% 0.0008 -0.1701)
OKLCH	oklch(33.82% 0.17 270.3)
XYZ	xyz(5.8860, 3.3714, 25.5347)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C238D #8D861C

analogous

#1C5B8D #1C238D #4D1C8D

triadic

#1C238D #8D1C23 #238D1C

tetradic

#1C238D #8D1C5B #8D861C #1C8D4D

square

#1C238D #8D1C5B #8D861C #1C8D4D

split-complementary

#1C238D #8D4D1C #5B8D1C

monochromatic

#080A27 #12165A #1C238D #2630C0 #4952DB

Accessibility & contrast

On white

12.54

#1C238D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1C238D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C238D

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C238D	#FFFFFF	#000000	##FFFFFF
##1C238D	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003990

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c238d;
/* rgb */ color: rgb(28, 35, 141);
/* oklch */ color: oklch(33.8% 0.170 270.3);

Tailwind

colors: {
  custom: {
    50: '#6e5faf',
    500: '#1c238d',
    950: '#000000',
  },
}

SCSS

$custom: #1c238d;
$custom-light: #6e5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1c238d",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 141
  },
  "hsl": {
    "h": 236.283,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33823,
    "c": 0.17008,
    "h": 270.3
  },
  "luminance": 0.03372
}

Semantic roles & 50–950 ramp

primary

#1C238D

secondary

#BDB548

accent

#DF3EEA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080411

muted

#7B7980

Preview Lab

Preview with #1C238D

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

Preview Lab → · Contrast checker → · Palette generator →