#42C37E
Closest named color: Dark Mint (#48C072). oklch(73% 0.151 155.8), rgb(66, 195, 126).
Aa
Black text reads best on this color (9.33:1).
About this color
#42C37E is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.151 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Mint (#48C072), ΔE 0.014 away. Black text reads best on it, at 9.33:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.33:1 |
| White text | 2.24:1 |
Values
| HEX | #42C37E |
| RGB | rgb(66, 195, 126) |
| HSL | hsl(148, 52%, 51%) |
| OKLCH | oklch(73% 0.151 155.8) |
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 #42C37E | 2.24:1 | Fails | Lc -48.7 | Large or bold text, headings |
| Black text on #42C37E | 9.33:1 | AAA | Lc 60.0 | Content text, not long reading |
| #42C37E text on white | 2.24:1 | Fails | Lc 43.9 | Non-text elements, placeholder text |
| #42C37E text on black | 9.33:1 | AAA | Lc -58.2 | 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
#DCF0E2
oklch(93.6% 0.028 155.3)
-
Step 200
200
#BEE4CB
oklch(88.5% 0.052 156.4)
-
Step 300
300
#8DD3A7
oklch(80.8% 0.094 156)
-
Step 400
400 (this color)
#42C37E
oklch(73% 0.151 155.8)
-
Step 500
500
#00A460
oklch(63.2% 0.154 155.8)
-
Step 600
600
#008A50
oklch(55.7% 0.136 155.8)
-
Step 700
700
#007442
oklch(49.1% 0.12 155.6)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#002F18
oklch(26.8% 0.065 156.1)
#42C37E 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) | #C2B47A | 0.136 |
| Deuteranopia (no green cones) | #B1A882 | 0.133 |
| Tritanopia (no blue cones) | #00C1B1 | 0.072 |
| Achromatopsia (no color) | #ADADAD | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42C37E
#42C37E
oklch(73% 0.151 155.8)
- #E180CC
#E180CC
oklch(72.9% 0.151 335.6)
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 #42C37E, closest first.
No curated palette has a color within ΔE 0.04 of #42C37E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.014
- Greenblue #23C48B ΔE 0.018
- Dark Mint Green #20C073 ΔE 0.023
- Algae Green #21C36F ΔE 0.026
- Green Blue #01C08D ΔE 0.029
- Soft Green #6FC276 ΔE 0.032
- Cool Green #33B864 ΔE 0.042
- Seaweed #18D17B ΔE 0.042
Use #42C37E 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.