#123E7F#123E7F

#123E7F is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.5% C 0.120 H 258.7°. Best body text is #FFFFFF at 10.39:1 contrast (WCAG AA passes).

Color values

HEX	#123E7F
RGB	rgb(18, 62, 127)
HSL	hsl(216, 75%, 28%)
HSV	hsv(216, 86%, 50%)
CMYK	cmyk(85.8%, 51.2%, 0%, 50.2%)
CIE-LAB	lab(27.03, 11.38, -40.91)
CIE-LCH	lch(27.03, 42.46, 285.54°)
OKLab	oklab(37.46% -0.0235 -0.1177)
OKLCH	oklch(37.46% 0.12 258.7)
XYZ	xyz(5.8014, 5.1054, 20.7542)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E7F #7F5312

analogous

#12747F #123E7F #1D127F

triadic

#123E7F #7F123E #3E7F12

tetradic

#123E7F #7F1274 #7F5312 #127F1D

square

#123E7F #7F1274 #7F5312 #127F1D

split-complementary

#123E7F #7F1D12 #747F12

monochromatic

#040D1B #0A2449 #123E7F #1A58B5 #2B74E1

Accessibility & contrast

On white

10.39

#123E7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#123E7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E7F

10.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E7F	#FFFFFF	#000000	##FFFFFF
##123E7F	1.00	10.39	2.02	10.39
#FFFFFF	10.39	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164581

Deuteranopia (green-blind)

#003B7E

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #123e7f;
/* rgb */ color: rgb(18, 62, 127);
/* oklch */ color: oklch(37.5% 0.120 258.7);

Tailwind

colors: {
  custom: {
    50: '#6572a5',
    500: '#123e7f',
    950: '#000000',
  },
}

SCSS

$custom: #123e7f;
$custom-light: #6572a5;
$custom-dark: #000000;

JSON

{
  "hex": "#123e7f",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 127
  },
  "hsl": {
    "h": 215.78,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37455,
    "c": 0.12007,
    "h": 258.7
  },
  "luminance": 0.05106
}

Semantic roles & 50–950 ramp

primary

#123E7F

secondary

#B58238

accent

#A636F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #123E7F

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

Preview Lab → · Contrast checker → · Palette generator →