#12103F#12103F

#12103F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.2% C 0.086 H 278.0°. Best body text is #FFFFFF at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#12103F
RGB	rgb(18, 16, 63)
HSL	hsl(243, 59%, 15%)
HSV	hsv(243, 75%, 25%)
CMYK	cmyk(71.4%, 74.6%, 0%, 75.3%)
CIE-LAB	lab(7.75, 18.17, -29.69)
CIE-LCH	lch(7.75, 34.81, 301.46°)
OKLab	oklab(21.23% 0.012 -0.0856)
OKLCH	oklch(21.23% 0.086 278)
XYZ	xyz(1.3317, 0.8580, 4.7971)
Luminance	0.0086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 3.23

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12103F #3D3F10

analogous

#10253F #12103F #29103F

triadic

#12103F #3F1210 #103F12

tetradic

#12103F #3F1025 #3D3F10 #103F29

square

#12103F #3F1025 #3D3F10 #103F29

split-complementary

#12103F #3F2910 #253F10

monochromatic

#070618 #070618 #12103F #201C70 #2E29A1

Accessibility & contrast

On white

17.92

#12103F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#12103F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12103F

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12103F	#FFFFFF	#000000	##FFFFFF
##12103F	1.00	17.92	1.17	17.92
#FFFFFF	17.92	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001940

Deuteranopia (green-blind)

#00153E

Tritanopia (blue-blind)

#001C25

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #12103f;
/* rgb */ color: rgb(18, 16, 63);
/* oklch */ color: oklch(21.2% 0.086 278.0);

Tailwind

colors: {
  custom: {
    50: '#574e75',
    500: '#12103f',
    950: '#000000',
  },
}

SCSS

$custom: #12103f;
$custom-light: #574e75;
$custom-dark: #000000;

JSON

{
  "hex": "#12103f",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 63
  },
  "hsl": {
    "h": 242.553,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.21229,
    "c": 0.08641,
    "h": 278
  },
  "luminance": 0.00858
}

Semantic roles & 50–950 ramp

primary

#12103F

secondary

#767932

accent

#E345DC

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #12103F

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

Preview Lab → · Contrast checker → · Palette generator →