#123D7F#123D7F

#123D7F is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.2% C 0.121 H 259.2°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#123D7F
RGB	rgb(18, 61, 127)
HSL	hsl(216, 75%, 28%)
HSV	hsv(216, 86%, 50%)
CMYK	cmyk(85.8%, 52%, 0%, 50.2%)
CIE-LAB	lab(26.73, 12.08, -41.40)
CIE-LCH	lch(26.73, 43.13, 286.27°)
OKLab	oklab(37.22% -0.0227 -0.1192)
OKLCH	oklch(37.22% 0.121 259.2)
XYZ	xyz(5.7476, 4.9977, 20.7363)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D7F #7F5412

analogous

#12737F #123D7F #1D127F

triadic

#123D7F #7F123D #3D7F12

tetradic

#123D7F #7F1273 #7F5412 #127F1D

square

#123D7F #7F1273 #7F5412 #127F1D

split-complementary

#123D7F #7F1D12 #737F12

monochromatic

#040D1B #0A2349 #123D7F #1A57B5 #2B72E1

Accessibility & contrast

On white

10.50

#123D7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#123D7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D7F

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D7F	#FFFFFF	#000000	##FFFFFF
##123D7F	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134481

Deuteranopia (green-blind)

#003B7E

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #123d7f;
/* rgb */ color: rgb(18, 61, 127);
/* oklch */ color: oklch(37.2% 0.121 259.2);

Tailwind

colors: {
  custom: {
    50: '#6571a5',
    500: '#123d7f',
    950: '#000000',
  },
}

SCSS

$custom: #123d7f;
$custom-light: #6571a5;
$custom-dark: #000000;

JSON

{
  "hex": "#123d7f",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 127
  },
  "hsl": {
    "h": 216.33,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37221,
    "c": 0.12136,
    "h": 259.2
  },
  "luminance": 0.04998
}

Semantic roles & 50–950 ramp

primary

#123D7F

secondary

#B58438

accent

#A836F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #123D7F

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

Preview Lab → · Contrast checker → · Palette generator →