#42B263
Closest named color: Medium Sea Green (#3CB371). oklch(68.1% 0.153 150), rgb(66, 178, 99).
Aa
Black text reads best on this color (7.77:1).
About this color
#42B263 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.153 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.016 away. Black text reads best on it, at 7.77:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 7.77:1 |
| White text | 2.69:1 |
Values
| HEX | #42B263 |
| RGB | rgb(66, 178, 99) |
| HSL | hsl(138, 46%, 48%) |
| OKLCH | oklch(68.1% 0.153 150) |
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 #42B263 | 2.69:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #42B263 | 7.77:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #42B263 text on white | 2.69:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #42B263 text on black | 7.77:1 | AAA | Lc -49.9 | 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
#DEEFE0
oklch(93.5% 0.027 148.8)
-
Step 200
200
#C1E4C7
oklch(88.6% 0.054 150.1)
-
Step 300
300
#93D2A0
oklch(80.8% 0.095 150.3)
-
Step 400
400 (this color)
#42B263
oklch(68.1% 0.153 150)
-
Step 500
500
#00A54B
oklch(63.1% 0.174 149.9)
-
Step 600
600
#008B3E
oklch(55.6% 0.154 149.9)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#005021
oklch(37.7% 0.104 150)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#42B263 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) | #B3A35D | 0.127 |
| Deuteranopia (no green cones) | #A59968 | 0.126 |
| Tritanopia (no blue cones) | #1CAF9F | 0.085 |
| Achromatopsia (no color) | #9D9D9D | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42B263
#42B263
oklch(68.1% 0.153 150)
- #CC72C5
#CC72C5
oklch(68% 0.154 330)
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 #42B263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.016
- Dark Pastel Green #56AE57 ΔE 0.017
- Cool Green #33B864 ΔE 0.018
- Jade Green #2BAF6A ΔE 0.018
- Seaweed Green #35AD6B ΔE 0.022
- Algae #54AC68 ΔE 0.024
- Green Teal #0CB577 ΔE 0.026
- Boring Green #63B365 ΔE 0.027
Use #42B263 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.