#123D7E#123D7E

#123D7E is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.120 H 259.0°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#123D7E
RGB	rgb(18, 61, 126)
HSL	hsl(216, 75%, 28%)
HSV	hsv(216, 86%, 49%)
CMYK	cmyk(85.7%, 51.6%, 0%, 50.6%)
CIE-LAB	lab(26.65, 11.66, -40.89)
CIE-LCH	lch(26.65, 42.52, 285.91°)
OKLab	oklab(37.14% -0.0228 -0.1177)
OKLCH	oklch(37.14% 0.12 259)
XYZ	xyz(5.6827, 4.9717, 20.3948)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D7E #7E5312

analogous

#12737E #123D7E #1D127E

triadic

#123D7E #7E123D #3D7E12

tetradic

#123D7E #7E1273 #7E5312 #127E1D

square

#123D7E #7E1273 #7E5312 #127E1D

split-complementary

#123D7E #7E1D12 #737E12

monochromatic

#040D1B #0A2348 #123D7E #1A57B4 #2A73E1

Accessibility & contrast

On white

10.53

#123D7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#123D7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D7E

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D7E	#FFFFFF	#000000	##FFFFFF
##123D7E	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154480

Deuteranopia (green-blind)

#003A7D

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #123d7e;
/* rgb */ color: rgb(18, 61, 126);
/* oklch */ color: oklch(37.1% 0.120 259.0);

Tailwind

colors: {
  custom: {
    50: '#6571a4',
    500: '#123d7e',
    950: '#000000',
  },
}

SCSS

$custom: #123d7e;
$custom-light: #6571a4;
$custom-dark: #000000;

JSON

{
  "hex": "#123d7e",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 126
  },
  "hsl": {
    "h": 216.111,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37141,
    "c": 0.11993,
    "h": 259
  },
  "luminance": 0.04972
}

Semantic roles & 50–950 ramp

primary

#123D7E

secondary

#B48338

accent

#A736F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123D7E

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

Preview Lab → · Contrast checker → · Palette generator →