#1C2F81#1C2F81

#1C2F81 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.140 H 268.0°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#1C2F81
RGB	rgb(28, 47, 129)
HSL	hsl(229, 64%, 31%)
HSV	hsv(229, 78%, 51%)
CMYK	cmyk(78.3%, 63.6%, 0%, 49.4%)
CIE-LAB	lab(23.22, 23.84, -48.34)
CIE-LCH	lch(23.22, 53.90, 296.25°)
OKLab	oklab(34.73% -0.0048 -0.1397)
OKLCH	oklch(34.73% 0.14 268)
XYZ	xyz(5.4565, 3.8643, 21.2229)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2F81 #816E1C

analogous

#1C6181 #1C2F81 #3B1C81

triadic

#1C2F81 #811C2F #2F811C

tetradic

#1C2F81 #811C61 #816E1C #1C813B

square

#1C2F81 #811C61 #816E1C #1C813B

split-complementary

#1C2F81 #813B1C #61811C

monochromatic

#060A1C #111D4F #1C2F81 #2741B3 #425DD6

Accessibility & contrast

On white

11.84

#1C2F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1C2F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2F81

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2F81	#FFFFFF	#000000	##FFFFFF
##1C2F81	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#00337F

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c2f81;
/* rgb */ color: rgb(28, 47, 129);
/* oklch */ color: oklch(34.7% 0.140 268.0);

Tailwind

colors: {
  custom: {
    50: '#6967a6',
    500: '#1c2f81',
    950: '#000000',
  },
}

SCSS

$custom: #1c2f81;
$custom-light: #6967a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2f81",
  "rgb": {
    "r": 28,
    "g": 47,
    "b": 129
  },
  "hsl": {
    "h": 228.713,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.34728,
    "c": 0.1398,
    "h": 268
  },
  "luminance": 0.03865
}

Semantic roles & 50–950 ramp

primary

#1C2F81

secondary

#B49F44

accent

#C840E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C2F81

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

Preview Lab → · Contrast checker → · Palette generator →