#1C287F#1C287F

#1C287F is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.146 H 270.0°. Best body text is #FFFFFF at 12.66:1 contrast (WCAG AA passes).

Color values

HEX	#1C287F
RGB	rgb(28, 40, 127)
HSL	hsl(233, 64%, 30%)
HSV	hsv(233, 78%, 50%)
CMYK	cmyk(78%, 68.5%, 0%, 50.2%)
CIE-LAB	lab(21.19, 27.87, -50.40)
CIE-LCH	lch(21.19, 57.59, 298.94°)
OKLab	oklab(33.18% -0.0001 -0.1458)
OKLCH	oklch(33.18% 0.146 270)
XYZ	xyz(5.0671, 3.2962, 20.4437)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C287F #7F731C

analogous

#1C597F #1C287F #411C7F

triadic

#1C287F #7F1C28 #287F1C

tetradic

#1C287F #7F1C59 #7F731C #1C7F41

square

#1C287F #7F1C59 #7F731C #1C7F41

split-complementary

#1C287F #7F411C #597F1C

monochromatic

#06081B #11184D #1C287F #2738B1 #4052D5

Accessibility & contrast

On white

12.66

#1C287F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1C287F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C287F

12.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C287F	#FFFFFF	#000000	##FFFFFF
##1C287F	1.00	12.66	1.66	12.66
#FFFFFF	12.66	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003882

Deuteranopia (green-blind)

#002E7D

Tritanopia (blue-blind)

#003F50

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1c287f;
/* rgb */ color: rgb(28, 40, 127);
/* oklch */ color: oklch(33.2% 0.146 270.0);

Tailwind

colors: {
  custom: {
    50: '#6962a5',
    500: '#1c287f',
    950: '#000000',
  },
}

SCSS

$custom: #1c287f;
$custom-light: #6962a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c287f",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 127
  },
  "hsl": {
    "h": 232.727,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.33181,
    "c": 0.1458,
    "h": 270
  },
  "luminance": 0.03297
}

Semantic roles & 50–950 ramp

primary

#1C287F

secondary

#B3A544

accent

#D341E7

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C287F

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

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