#40C174
Closest named color: Dark Mint (#48C072). oklch(72.2% 0.159 153.2), rgb(64, 193, 116).
Aa
Black text reads best on this color (9.09:1).
About this color
#40C174 is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.159 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Mint (#48C072), ΔE 0.005 away. Black text reads best on it, at 9.09:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Dark Mint (#48C072) |
| Black text | 9.09:1 |
| White text | 2.30:1 |
Values
| HEX | #40C174 |
| RGB | rgb(64, 193, 116) |
| HSL | hsl(144, 51%, 50%) |
| OKLCH | oklch(72.2% 0.159 153.2) |
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 #40C174 | 2.30:1 | Fails | Lc -50.0 | Large or bold text, headings |
| Black text on #40C174 | 9.09:1 | AAA | Lc 58.8 | Large or bold text, headings |
| #40C174 text on white | 2.30:1 | Fails | Lc 45.1 | Large or bold text, headings |
| #40C174 text on black | 9.09:1 | AAA | Lc -57.0 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DCF0E1
oklch(93.6% 0.029 153.3)
-
Step 200
200
#BEE4C8
oklch(88.4% 0.055 153.2)
-
Step 300
300
#8ED4A2
oklch(81% 0.1 152.7)
-
Step 400
400 (this color)
#40C174
oklch(72.2% 0.159 153.2)
-
Step 500
500
#00A458
oklch(63% 0.161 153.3)
-
Step 600
600
#008A49
oklch(55.5% 0.142 153.3)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#40C174 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) | #C1B26F | 0.137 |
| Deuteranopia (no green cones) | #B1A679 | 0.135 |
| Tritanopia (no blue cones) | #00BFAE | 0.081 |
| Achromatopsia (no color) | #ABABAB | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40C174
#40C174
oklch(72.2% 0.159 153.2)
- #DF7CCF
#DF7CCF
oklch(72.2% 0.159 333.3)
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 #40C174, closest first.
No curated palette has a color within ΔE 0.04 of #40C174.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mint #48C072 ΔE 0.005
- Dark Mint Green #20C073 ΔE 0.014
- Algae Green #21C36F ΔE 0.016
- Greenblue #23C48B ΔE 0.028
- Cool Green #33B864 ΔE 0.031
- Green Blue #01C08D ΔE 0.035
- Soft Green #6FC276 ΔE 0.036
- Boring Green #63B365 ΔE 0.041
Use #40C174 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.