#1F7BB4#1F7BB4

#1F7BB4 is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 55.9% C 0.120 H 241.9°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F7BB4
RGB	rgb(31, 123, 180)
HSL	hsl(203, 71%, 41%)
HSV	hsv(203, 83%, 71%)
CMYK	cmyk(82.8%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(49.19, -5.60, -37.41)
CIE-LCH	lch(49.19, 37.83, 261.49°)
OKLab	oklab(55.88% -0.0567 -0.1062)
OKLCH	oklch(55.88% 0.12 241.9)
XYZ	xyz(15.8830, 17.7505, 45.7602)
Luminance	0.1775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F7BB4 #B4581F

analogous

#1FB4A3 #1F7BB4 #1F31B4

triadic

#1F7BB4 #B41F7B #7BB41F

tetradic

#1F7BB4 #A31FB4 #B4581F #31B41F

square

#1F7BB4 #A31FB4 #B4581F #31B41F

split-complementary

#1F7BB4 #B41F31 #B4A31F

monochromatic

#0D344C #165780 #1F7BB4 #349CDC #68B5E5

Accessibility & contrast

On white

4.61

#1F7BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#1F7BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #1F7BB4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F7BB4	#FFFFFF	#000000	##FFFFFF
##1F7BB4	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB6

Deuteranopia (green-blind)

#4C6FB3

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #1f7bb4;
/* rgb */ color: rgb(31, 123, 180);
/* oklch */ color: oklch(55.9% 0.120 241.9);

Tailwind

colors: {
  custom: {
    50: '#74a0ca',
    500: '#1f7bb4',
    950: '#000000',
  },
}

SCSS

$custom: #1f7bb4;
$custom-light: #74a0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f7bb4",
  "rgb": {
    "r": 31,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 202.953,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.55883,
    "c": 0.12037,
    "h": 241.9
  },
  "luminance": 0.17753
}

Semantic roles & 50–950 ramp

primary

#1F7BB4

secondary

#CB8B64

accent

#7F3AED

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #1F7BB4

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

Preview Lab → · Contrast checker → · Palette generator →