#42B367
Closest named color: Medium Sea Green (#3CB371). oklch(68.4% 0.151 151), rgb(66, 179, 103).
Aa
Black text reads best on this color (7.87:1).
About this color
#42B367 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.151 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.012 away. Black text reads best on it, at 7.87:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 7.87:1 |
| White text | 2.66:1 |
Values
| HEX | #42B367 |
| RGB | rgb(66, 179, 103) |
| HSL | hsl(140, 46%, 48%) |
| OKLCH | oklch(68.4% 0.151 151) |
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 #42B367 | 2.66:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #42B367 | 7.87:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #42B367 text on white | 2.66:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #42B367 text on black | 7.87:1 | AAA | Lc -50.4 | 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
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DDEFE1
oklch(93.5% 0.027 152.4)
-
Step 200
200
#C1E4C8
oklch(88.6% 0.053 151.1)
-
Step 300
300
#93D2A2
oklch(80.8% 0.093 151.3)
-
Step 400
400 (this color)
#42B367
oklch(68.4% 0.151 151)
-
Step 500
500
#00A550
oklch(63.2% 0.17 151.1)
-
Step 600
600
#008B42
oklch(55.7% 0.15 151)
-
Step 700
700
#007536
oklch(49.2% 0.133 150.8)
-
Step 800
800
#00602B
oklch(42.8% 0.116 150.8)
-
Step 900
900
#005023
oklch(37.7% 0.102 150.9)
-
Step 950
950
#003012
oklch(27% 0.073 150.7)
#42B367 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) | #B4A561 | 0.127 |
| Deuteranopia (no green cones) | #A59A6C | 0.125 |
| Tritanopia (no blue cones) | #19B0A0 | 0.081 |
| Achromatopsia (no color) | #9E9E9E | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42B367
#42B367
oklch(68.4% 0.151 151)
- #CD74C4
#CD74C4
oklch(68.4% 0.15 330.8)
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 #42B367, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.012
- Cool Green #33B864 ΔE 0.017
- Jade Green #2BAF6A ΔE 0.019
- Dark Pastel Green #56AE57 ΔE 0.020
- Seaweed Green #35AD6B ΔE 0.022
- Algae #54AC68 ΔE 0.023
- Green Teal #0CB577 ΔE 0.023
- Dark Seafoam #1FB57A ΔE 0.024
Use #42B367 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.