#18B274
Closest named color: Green Teal (#0CB577). oklch(67.5% 0.15 159), rgb(24, 178, 116).
Aa
Black text reads best on this color (7.65:1).
About this color
#18B274 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.150 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Teal (#0CB577), ΔE 0.008 away. Black text reads best on it, at 7.65:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Green Teal (#0CB577) |
| Black text | 7.65:1 |
| White text | 2.74:1 |
Values
| HEX | #18B274 |
| RGB | rgb(24, 178, 116) |
| HSL | hsl(156, 76%, 40%) |
| OKLCH | oklch(67.5% 0.15 159) |
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.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #18B274 | 2.74:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #18B274 | 7.65:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #18B274 text on white | 2.74:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #18B274 text on black | 7.65:1 | AAA | Lc -49.4 | Large or bold text, headings |
Tints and shades
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.
-
Step 50
50
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DBF0E3
oklch(93.6% 0.028 158.7)
-
Step 200
200
#BDE4CD
oklch(88.5% 0.051 159.3)
-
Step 300
300
#8AD4AB
oklch(81% 0.094 159.1)
-
Step 400
400 (this color)
#18B274
oklch(67.5% 0.15 159)
-
Step 500
500
#00A368
oklch(63.1% 0.145 158.9)
-
Step 600
600
#008957
oklch(55.5% 0.128 159.1)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3B
oklch(42.8% 0.098 159.1)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#18B274 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.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #B0A370 | 0.140 |
| Deuteranopia (no green cones) | #9F9778 | 0.137 |
| Tritanopia (no blue cones) | #00B1A2 | 0.066 |
| Achromatopsia (no color) | #9C9C9C | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18B274
#18B274
oklch(67.5% 0.15 159)
- #D16FB5
#D16FB5
oklch(67.5% 0.149 339)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #18B274, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Teal #0CB577 ΔE 0.008
- Bluey Green #2BB179 ΔE 0.011
- Dark Seafoam #1FB57A ΔE 0.011
- Jade Green #2BAF6A ΔE 0.013
- Medium Sea Green #3CB371 ΔE 0.015
- Seaweed Green #35AD6B ΔE 0.016
- Dark Seafoam Green #3EAF76 ΔE 0.018
- Algae #54AC68 ΔE 0.031
Use #18B274 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.