#40AC8F
Closest named color: Greeny Blue (#42B395). oklch(67.5% 0.108 172), rgb(64, 172, 143).
Aa
Black text reads best on this color (7.51:1).
About this color
#40AC8F is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.108 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.020 away. Black text reads best on it, at 7.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 7.51:1 |
| White text | 2.79:1 |
Values
| HEX | #40AC8F |
| RGB | rgb(64, 172, 143) |
| HSL | hsl(164, 46%, 46%) |
| OKLCH | oklch(67.5% 0.108 172) |
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 #40AC8F | 2.79:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #40AC8F | 7.51:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #40AC8F text on white | 2.79:1 | Fails | Lc 53.5 | Large or bold text, headings |
| #40AC8F text on black | 7.51:1 | AAA | Lc -48.3 | 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
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DEEEE8
oklch(93.6% 0.019 171.5)
-
Step 200
200
#C1E2D6
oklch(88.5% 0.038 171.4)
-
Step 300
300
#94CFBC
oklch(80.9% 0.066 172.6)
-
Step 400
400 (this color)
#40AC8F
oklch(67.5% 0.108 172)
-
Step 500
500
#00A181
oklch(63.2% 0.122 172)
-
Step 600
600
#00876C
oklch(55.5% 0.108 172.1)
-
Step 700
700
#00725A
oklch(49.2% 0.096 171.5)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E23
oklch(26.8% 0.052 171.9)
#40AC8F 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) | #A7A18E | 0.112 |
| Deuteranopia (no green cones) | #979691 | 0.106 |
| Tritanopia (no blue cones) | #00ADA4 | 0.033 |
| Achromatopsia (no color) | #9B9B9B | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40AC8F
#40AC8F
oklch(67.5% 0.108 172)
- #C97A9D
#C97A9D
oklch(67.4% 0.107 352.3)
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 #40AC8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.020
- Tea #65AB7C ΔE 0.035
- Light Sea Green #20B2AA ΔE 0.037
- Dark Seafoam Green #3EAF76 ΔE 0.039
- Bluey Green #2BB179 ΔE 0.041
- Jade #1FA774 ΔE 0.044
- Dull Teal #5F9E8F ΔE 0.045
- Dark Seafoam #1FB57A ΔE 0.049
Use #40AC8F 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.