#1B4F7D#1B4F7D

#1B4F7D is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.7% C 0.094 H 248.9°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F7D
RGB	rgb(27, 79, 125)
HSL	hsl(208, 64%, 30%)
HSV	hsv(208, 78%, 49%)
CMYK	cmyk(78.4%, 36.8%, 0%, 51%)
CIE-LAB	lab(32.49, 0.05, -30.92)
CIE-LCH	lch(32.49, 30.92, 270.10°)
OKLab	oklab(41.73% -0.0339 -0.0879)
OKLCH	oklch(41.73% 0.094 248.9)
XYZ	xyz(6.9482, 7.3048, 20.4418)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F7D #7D491B

analogous

#1B7D7A #1B4F7D #1B1E7D

triadic

#1B4F7D #7D1B4F #4F7D1B

tetradic

#1B4F7D #7A1B7D #7D491B #1E7D1B

square

#1B4F7D #7A1B7D #7D491B #1E7D1B

split-complementary

#1B4F7D #7D1B1E #7D7A1B

monochromatic

#051019 #102F4B #1B4F7D #266FAF #3D8ED5

Accessibility & contrast

On white

8.53

#1B4F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1B4F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F7D

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F7D	#FFFFFF	#000000	##FFFFFF
##1B4F7D	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A517F

Deuteranopia (green-blind)

#2B487C

Tritanopia (blue-blind)

#005A60

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4f7d;
/* rgb */ color: rgb(27, 79, 125);
/* oklch */ color: oklch(41.7% 0.094 248.9);

Tailwind

colors: {
  custom: {
    50: '#6780a3',
    500: '#1b4f7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f7d;
$custom-light: #6780a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f7d",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 125
  },
  "hsl": {
    "h": 208.163,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.41728,
    "c": 0.09426,
    "h": 248.9
  },
  "luminance": 0.07306
}

Semantic roles & 50–950 ramp

primary

#1B4F7D

secondary

#B17743

accent

#8F40E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B4F7D

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

Preview Lab → · Contrast checker → · Palette generator →