#123F7A#123F7A

#123F7A is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.3% C 0.112 H 257.0°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#123F7A
RGB	rgb(18, 63, 122)
HSL	hsl(214, 74%, 27%)
HSV	hsv(214, 85%, 48%)
CMYK	cmyk(85.2%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(26.98, 8.57, -37.84)
CIE-LCH	lch(26.98, 38.80, 282.76°)
OKLab	oklab(37.3% -0.0251 -0.1087)
OKLCH	oklch(37.3% 0.112 257)
XYZ	xyz(5.5385, 5.0881, 19.0988)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F7A #7A4D12

analogous

#12737A #123F7A #19127A

triadic

#123F7A #7A123F #3F7A12

tetradic

#123F7A #7A1273 #7A4D12 #127A19

square

#123F7A #7A1273 #7A4D12 #127A19

split-complementary

#123F7A #7A1912 #737A12

monochromatic

#040E1B #0A2345 #123F7A #1A5BAF #2777DF

Accessibility & contrast

On white

10.41

#123F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#123F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F7A

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F7A	#FFFFFF	#000000	##FFFFFF
##123F7A	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F457C

Deuteranopia (green-blind)

#023B79

Tritanopia (blue-blind)

#004D56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123f7a;
/* rgb */ color: rgb(18, 63, 122);
/* oklch */ color: oklch(37.3% 0.112 257.0);

Tailwind

colors: {
  custom: {
    50: '#6373a1',
    500: '#123f7a',
    950: '#000000',
  },
}

SCSS

$custom: #123f7a;
$custom-light: #6373a1;
$custom-dark: #000000;

JSON

{
  "hex": "#123f7a",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 214.038,
    "s": 74.286,
    "l": 27.451
  },
  "oklch": {
    "l": 0.37303,
    "c": 0.11159,
    "h": 257
  },
  "luminance": 0.05089
}

Semantic roles & 50–950 ramp

primary

#123F7A

secondary

#B07C38

accent

#A037F1

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080F

muted

#7A7B7E

Preview Lab

Preview with #123F7A

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

Preview Lab → · Contrast checker → · Palette generator →