#1C2983#1C2983

#1C2983 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.8% C 0.150 H 269.6°. Best body text is #FFFFFF at 12.40:1 contrast (WCAG AA passes).

Color values

HEX	#1C2983
RGB	rgb(28, 41, 131)
HSL	hsl(232, 65%, 31%)
HSV	hsv(232, 79%, 51%)
CMYK	cmyk(78.6%, 68.7%, 0%, 48.6%)
CIE-LAB	lab(21.84, 28.73, -51.86)
CIE-LCH	lch(21.84, 59.29, 298.98°)
OKLab	oklab(33.77% -0.001 -0.1501)
OKLCH	oklch(33.77% 0.15 269.6)
XYZ	xyz(5.3672, 3.4709, 21.8554)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2983 #83761C

analogous

#1C5C83 #1C2983 #421C83

triadic

#1C2983 #831C29 #29831C

tetradic

#1C2983 #831C5C #83761C #1C8342

square

#1C2983 #831C5C #83761C #1C8342

split-complementary

#1C2983 #83421C #5C831C

monochromatic

#06091E #111951 #1C2983 #2739B5 #4355D7

Accessibility & contrast

On white

12.40

#1C2983 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1C2983 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2983

12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2983	#FFFFFF	#000000	##FFFFFF
##1C2983	1.00	12.40	1.69	12.40
#FFFFFF	12.40	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003986

Deuteranopia (green-blind)

#002F81

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c2983;
/* rgb */ color: rgb(28, 41, 131);
/* oklch */ color: oklch(33.8% 0.150 269.6);

Tailwind

colors: {
  custom: {
    50: '#6a63a8',
    500: '#1c2983',
    950: '#000000',
  },
}

SCSS

$custom: #1c2983;
$custom-light: #6a63a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2983",
  "rgb": {
    "r": 28,
    "g": 41,
    "b": 131
  },
  "hsl": {
    "h": 232.427,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33772,
    "c": 0.15008,
    "h": 269.6
  },
  "luminance": 0.03471
}

Semantic roles & 50–950 ramp

primary

#1C2983

secondary

#B6A845

accent

#D340E8

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1C2983

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

Preview Lab → · Contrast checker → · Palette generator →