#123C7D#123C7D

#123C7D is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.120 H 259.3°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#123C7D
RGB	rgb(18, 60, 125)
HSL	hsl(216, 75%, 28%)
HSV	hsv(216, 86%, 49%)
CMYK	cmyk(85.6%, 52%, 0%, 51%)
CIE-LAB	lab(26.27, 11.94, -40.88)
CIE-LCH	lch(26.27, 42.58, 286.29°)
OKLab	oklab(36.83% -0.0222 -0.1177)
OKLCH	oklch(36.83% 0.12 259.3)
XYZ	xyz(5.5656, 4.8403, 20.0390)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C7D #7D5312

analogous

#12717D #123C7D #1E127D

triadic

#123C7D #7D123C #3C7D12

tetradic

#123C7D #7D1271 #7D5312 #127D1E

square

#123C7D #7D1271 #7D5312 #127D1E

split-complementary

#123C7D #7D1E12 #717D12

monochromatic

#040D1B #0A2248 #123C7D #1A56B2 #2971E0

Accessibility & contrast

On white

10.67

#123C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#123C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C7D

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C7D	#FFFFFF	#000000	##FFFFFF
##123C7D	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13437F

Deuteranopia (green-blind)

#003A7C

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #123c7d;
/* rgb */ color: rgb(18, 60, 125);
/* oklch */ color: oklch(36.8% 0.120 259.3);

Tailwind

colors: {
  custom: {
    50: '#6471a3',
    500: '#123c7d',
    950: '#000000',
  },
}

SCSS

$custom: #123c7d;
$custom-light: #6471a3;
$custom-dark: #000000;

JSON

{
  "hex": "#123c7d",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 216.449,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36827,
    "c": 0.11979,
    "h": 259.3
  },
  "luminance": 0.04841
}

Semantic roles & 50–950 ramp

primary

#123C7D

secondary

#B38338

accent

#A836F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123C7D

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

Preview Lab → · Contrast checker → · Palette generator →