#123D7D#123D7D

#123D7D is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.118 H 258.8°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#123D7D
RGB	rgb(18, 61, 125)
HSL	hsl(216, 75%, 28%)
HSV	hsv(216, 86%, 49%)
CMYK	cmyk(85.6%, 51.2%, 0%, 51%)
CIE-LAB	lab(26.58, 11.24, -40.38)
CIE-LCH	lch(26.58, 41.92, 285.55°)
OKLab	oklab(37.06% -0.023 -0.1162)
OKLCH	oklch(37.06% 0.118 258.8)
XYZ	xyz(5.6185, 4.9461, 20.0566)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D7D #7D5212

analogous

#12727D #123D7D #1D127D

triadic

#123D7D #7D123D #3D7D12

tetradic

#123D7D #7D1272 #7D5212 #127D1D

square

#123D7D #7D1272 #7D5212 #127D1D

split-complementary

#123D7D #7D1D12 #727D12

monochromatic

#040D1B #0A2348 #123D7D #1A57B2 #2973E0

Accessibility & contrast

On white

10.56

#123D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#123D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D7D

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D7D	#FFFFFF	#000000	##FFFFFF
##123D7D	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16447F

Deuteranopia (green-blind)

#003A7C

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #123d7d;
/* rgb */ color: rgb(18, 61, 125);
/* oklch */ color: oklch(37.1% 0.118 258.8);

Tailwind

colors: {
  custom: {
    50: '#6471a3',
    500: '#123d7d',
    950: '#000000',
  },
}

SCSS

$custom: #123d7d;
$custom-light: #6471a3;
$custom-dark: #000000;

JSON

{
  "hex": "#123d7d",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 215.888,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37061,
    "c": 0.11848,
    "h": 258.8
  },
  "luminance": 0.04947
}

Semantic roles & 50–950 ramp

primary

#123D7D

secondary

#B38138

accent

#A636F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123D7D

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

Preview Lab → · Contrast checker → · Palette generator →