#1C256F#1C256F

#1C256F is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.0% C 0.127 H 271.4°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#1C256F
RGB	rgb(28, 37, 111)
HSL	hsl(233, 60%, 27%)
HSV	hsv(233, 75%, 44%)
CMYK	cmyk(74.8%, 66.7%, 0%, 56.5%)
CIE-LAB	lab(18.87, 23.72, -43.96)
CIE-LCH	lch(18.87, 49.95, 298.35°)
OKLab	oklab(31.01% 0.0031 -0.127)
OKLCH	oklch(31.01% 0.127 271.4)
XYZ	xyz(4.0087, 2.7173, 15.3491)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C256F #6F661C

analogous

#1C4F6F #1C256F #3D1C6F

triadic

#1C256F #6F1C25 #256F1C

tetradic

#1C256F #6F1C4F #6F661C #1C6F3D

square

#1C256F #6F1C4F #6F661C #1C6F3D

split-complementary

#1C256F #6F3D1C #4F6F1C

monochromatic

#060818 #10153E #1C256F #2835A0 #3849CD

Accessibility & contrast

On white

13.60

#1C256F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1C256F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C256F

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C256F	#FFFFFF	#000000	##FFFFFF
##1C256F	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003271

Deuteranopia (green-blind)

#002A6E

Tritanopia (blue-blind)

#003846

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1c256f;
/* rgb */ color: rgb(28, 37, 111);
/* oklch */ color: oklch(31.0% 0.127 271.4);

Tailwind

colors: {
  custom: {
    50: '#655f99',
    500: '#1c256f',
    950: '#000000',
  },
}

SCSS

$custom: #1c256f;
$custom-light: #655f99;
$custom-dark: #000000;

JSON

{
  "hex": "#1c256f",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 111
  },
  "hsl": {
    "h": 233.494,
    "s": 59.712,
    "l": 27.255
  },
  "oklch": {
    "l": 0.31011,
    "c": 0.12702,
    "h": 271.4
  },
  "luminance": 0.02718
}

Semantic roles & 50–950 ramp

primary

#1C256F

secondary

#A49943

accent

#D245E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1C256F

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

Preview Lab → · Contrast checker → · Palette generator →