#40BF98
Closest named color: Green Blue (#01C08D). oklch(72.5% 0.125 168.7), rgb(64, 191, 152).
Aa
Black text reads best on this color (9.12:1).
About this color
#40BF98 is a medium-light, moderately saturated green. In OKLCH its lightness is 72%, its chroma 0.125 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.027 away. Black text reads best on it, at 9.12:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Green Blue (#01C08D) |
| Black text | 9.12:1 |
| White text | 2.30:1 |
Values
| HEX | #40BF98 |
| RGB | rgb(64, 191, 152) |
| HSL | hsl(162, 50%, 50%) |
| OKLCH | oklch(72.5% 0.125 168.7) |
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 #40BF98 | 2.30:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #40BF98 | 9.12:1 | AAA | Lc 58.9 | Large or bold text, headings |
| #40BF98 text on white | 2.30:1 | Fails | Lc 45.0 | Large or bold text, headings |
| #40BF98 text on black | 9.12:1 | AAA | Lc -57.1 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DCEFE7
oklch(93.6% 0.023 168.7)
-
Step 200
200
#BEE3D4
oklch(88.5% 0.044 168.8)
-
Step 300
300
#8DD1B8
oklch(80.8% 0.078 169.3)
-
Step 400
400 (this color)
#40BF98
oklch(72.5% 0.125 168.7)
-
Step 500
500
#00A17C
oklch(63% 0.126 169.1)
-
Step 600
600
#008867
oklch(55.7% 0.112 168.2)
-
Step 700
700
#007257
oklch(49.1% 0.098 169.1)
-
Step 800
800
#005E46
oklch(42.8% 0.087 168)
-
Step 900
900
#004E3A
oklch(37.7% 0.076 168.5)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
#40BF98 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) | #BAB296 | 0.127 |
| Deuteranopia (no green cones) | #A9A69B | 0.122 |
| Tritanopia (no blue cones) | #00C0B4 | 0.040 |
| Achromatopsia (no color) | #ABABAB | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BF98
#40BF98
oklch(72.5% 0.125 168.7)
- #E084B3
#E084B3
oklch(72.5% 0.126 348.7)
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 #40BF98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.027
- Greenblue #23C48B ΔE 0.030
- Greeny Blue #42B395 ΔE 0.034
- Topaz #13BBAF ΔE 0.040
- Dark Seafoam #1FB57A ΔE 0.050
- Dark Mint #48C072 ΔE 0.051
- Medium Aquamarine #66CDAA ΔE 0.054
- Bluey Green #2BB179 ΔE 0.054
Use #40BF98 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.