#40C898
Closest named color: Greenblue (#23C48B). oklch(74.8% 0.136 165.3), rgb(64, 200, 152).
Aa
Black text reads best on this color (9.93:1).
About this color
#40C898 is a medium-light, moderately saturated green. In OKLCH its lightness is 75%, its chroma 0.136 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.025 away. Black text reads best on it, at 9.93:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #40C898 |
| RGB | rgb(64, 200, 152) |
| HSL | hsl(159, 55%, 52%) |
| OKLCH | oklch(74.8% 0.136 165.3) |
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 #40C898 | 2.11:1 | Fails | Lc -45.7 | Large or bold text, headings |
| Black text on #40C898 | 9.93:1 | AAA | Lc 62.9 | Content text, not long reading |
| #40C898 text on white | 2.11:1 | Fails | Lc 41.0 | Non-text elements, placeholder text |
| #40C898 text on black | 9.93:1 | AAA | Lc -61.2 | Content text, not long reading |
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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DCEFE6
oklch(93.6% 0.023 165.8)
-
Step 200
200
#BDE4D2
oklch(88.6% 0.048 165.6)
-
Step 300
300
#8AD3B3
oklch(81% 0.086 165)
-
Step 400
400 (this color)
#40C898
oklch(74.8% 0.136 165.3)
-
Step 500
500
#00A276
oklch(63.1% 0.132 165.5)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#40C898 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) | #C4BA95 | 0.135 |
| Deuteranopia (no green cones) | #B2AD9B | 0.130 |
| Tritanopia (no blue cones) | #00C8BB | 0.050 |
| Achromatopsia (no color) | #B2B2B2 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40C898
#40C898
oklch(74.8% 0.136 165.3)
- #EA88C0
#EA88C0
oklch(74.8% 0.137 345.6)
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 #40C898, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.025
- Green Blue #01C08D ΔE 0.034
- Emerald #06D6A0 ΔE 0.038
- Medium Aquamarine #66CDAA ΔE 0.040
- Soft Green #6FC276 ΔE 0.046
- Dark Mint #48C072 ΔE 0.047
- Dark Mint Green #20C073 ΔE 0.053
- Seaweed #18D17B ΔE 0.055
Use #40C898 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.