Seaweed #18D17B

Seaweed is a medium-light, vivid green with hex code #18D17B and RGB rgb(24, 209, 123).

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Black text reads best on this color (10.44:1).

About this color

#18D17B is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.183 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. It is the named color Seaweed. Black text reads best on it, at 10.44:1.

Hue familyGreens
Lightnessmedium-light (76%)
Chromavivid (0.183)
Temperaturein between
Nearest nameSeaweed
Black text10.44:1
White text2.01:1

Colors that go with Seaweed

Matches found by rotating Seaweed around the OKLCH hue wheel, each labelled with the closest name in our list.

Complementary

The opposite hue (180°).

Open the complementary palette in the generator

Analogous

Neighbouring hues, 30° either side.

Open the analogous palette in the generator

Color palettes with Seaweed

Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Seaweed, closest first.

Similar named colors

The eight named colors closest to Seaweed, with their ΔE distance.

More about Seaweed

How to make Seaweed

A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.

  • 1 part green
  • 1 part white

Recipe result: #74C780, a difference of ΔE 0.056 from Seaweed. That is close; add a little more of one paint to match.

What colors make green? | Color mixing chart

Codes for Seaweed in every format

HEX#18D17B
RGBrgb(24, 209, 123)
HSLhsl(152, 79%, 46%)
OKLCHoklch(75.8% 0.183 155.1)

Contrast

WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.

PairWCAG 2ResultAPCAAPCA guidance
White text on #18D17B 2.01:1 Fails Lc -42.8 Non-text elements, placeholder text
Black text on #18D17B 10.44:1 AAA Lc 65.6 Content text, not long reading
#18D17B text on white 2.01:1 Fails Lc 38.4 Non-text elements, placeholder text
#18D17B text on black 10.44:1 AAA Lc -64.0 Content text, not long reading

Shades and tints of Seaweed

A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.

  1. Step 50

    50

    #EEF9F1

    oklch(97.2% 0.016 154.5)

  2. Step 100

    100

    #D9F1E0

    oklch(93.6% 0.034 154.8)

  3. Step 200

    200

    #B9E6C7

    oklch(88.5% 0.063 154.9)

  4. Step 300

    300

    #81D7A0

    oklch(81% 0.115 154.9)

  5. Step 400

    400 (this color)

    #18D17B

    oklch(75.8% 0.183 155.1)

  6. Step 500

    500

    #00A45E

    oklch(63.1% 0.156 155.1)

  7. Step 600

    600

    #008A4E

    oklch(55.6% 0.137 155)

  8. Step 700

    700

    #007441

    oklch(49.1% 0.121 155.2)

  9. Step 800

    800

    #005F34

    oklch(42.6% 0.105 155.1)

  10. Step 900

    900

    #004F2B

    oklch(37.6% 0.092 155.5)

  11. Step 950

    950

    #003017

    oklch(27.1% 0.068 154.6)

Export this scale for Tailwind in the Tailwind colors tool

Seaweed with color blindness

Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.

VisionSeen asShift (ΔE)
Protanopia (no red cones)#D0BF750.162
Deuteranopia (no green cones)#BDB1810.160
Tritanopia (no blue cones)#00CFBC0.090
Achromatopsia (no color)#B7B7B70.184

Use Seaweed in your product

Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.