#123C8F#123C8F

#123C8F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.145 H 262.0°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#123C8F
RGB	rgb(18, 60, 143)
HSL	hsl(220, 78%, 32%)
HSV	hsv(220, 87%, 56%)
CMYK	cmyk(87.4%, 58%, 0%, 43.9%)
CIE-LAB	lab(27.69, 19.47, -49.78)
CIE-LCH	lch(27.69, 53.46, 291.36°)
OKLab	oklab(38.35% -0.0202 -0.1439)
OKLCH	oklch(38.35% 0.145 262)
XYZ	xyz(6.8214, 5.3426, 26.6530)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C8F #8F6512

analogous

#127B8F #123C8F #27128F

triadic

#123C8F #8F123C #3C8F12

tetradic

#123C8F #8F127B #8F6512 #128F27

square

#123C8F #8F127B #8F6512 #128F27

split-complementary

#123C8F #8F2712 #7B8F12

monochromatic

#040E22 #0B2559 #123C8F #1953C5 #3671E6

Accessibility & contrast

On white

10.15

#123C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#123C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C8F

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C8F	#FFFFFF	#000000	##FFFFFF
##123C8F	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003C8D

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #123c8f;
/* rgb */ color: rgb(18, 60, 143);
/* oklch */ color: oklch(38.3% 0.145 262.0);

Tailwind

colors: {
  custom: {
    50: '#6971b0',
    500: '#123c8f',
    950: '#000000',
  },
}

SCSS

$custom: #123c8f;
$custom-light: #6971b0;
$custom-dark: #000000;

JSON

{
  "hex": "#123c8f",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 219.84,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38349,
    "c": 0.14531,
    "h": 262
  },
  "luminance": 0.05343
}

Semantic roles & 50–950 ramp

primary

#123C8F

secondary

#C3953A

accent

#B334F4

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080711

muted

#7A7A80

Preview Lab

Preview with #123C8F

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

Preview Lab → · Contrast checker → · Palette generator →