#12103C#12103C

#12103C is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.9% C 0.082 H 278.7°. Best body text is #FFFFFF at 18.03:1 contrast (WCAG AA passes).

Color values

HEX	#12103C
RGB	rgb(18, 16, 60)
HSL	hsl(243, 58%, 15%)
HSV	hsv(243, 73%, 24%)
CMYK	cmyk(70%, 73.3%, 0%, 76.5%)
CIE-LAB	lab(7.45, 16.93, -28.02)
CIE-LCH	lch(7.45, 32.74, 301.13°)
OKLab	oklab(20.91% 0.0123 -0.0807)
OKLCH	oklch(20.91% 0.082 278.7)
XYZ	xyz(1.2501, 0.8253, 4.3675)
Luminance	0.0083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12103C #3A3C10

analogous

#10243C #12103C #28103C

triadic

#12103C #3C1210 #103C12

tetradic

#12103C #3C1024 #3A3C10 #103C28

square

#12103C #3C1024 #3A3C10 #103C28

split-complementary

#12103C #3C2810 #243C10

monochromatic

#070618 #070618 #12103C #201D6C #2F2A9D

Accessibility & contrast

On white

18.03

#12103C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#12103C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12103C

18.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12103C	#FFFFFF	#000000	##FFFFFF
##12103C	1.00	18.03	1.17	18.03
#FFFFFF	18.03	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	18.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183D

Deuteranopia (green-blind)

#00153B

Tritanopia (blue-blind)

#001B24

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #12103c;
/* rgb */ color: rgb(18, 16, 60);
/* oklch */ color: oklch(20.9% 0.082 278.7);

Tailwind

colors: {
  custom: {
    50: '#564e72',
    500: '#12103c',
    950: '#000000',
  },
}

SCSS

$custom: #12103c;
$custom-light: #564e72;
$custom-dark: #000000;

JSON

{
  "hex": "#12103c",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 60
  },
  "hsl": {
    "h": 242.727,
    "s": 57.895,
    "l": 14.902
  },
  "oklch": {
    "l": 0.20913,
    "c": 0.08167,
    "h": 278.7
  },
  "luminance": 0.00825
}

Semantic roles & 50–950 ramp

primary

#12103C

secondary

#737632

accent

#E147DA

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030108

muted

#78777B

Preview Lab

Preview with #12103C

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

Preview Lab → · Contrast checker → · Palette generator →