#40B79D
Closest named color: Greeny Blue (#42B395). oklch(70.6% 0.112 175.5), rgb(64, 183, 157).
Aa
Black text reads best on this color (8.47:1).
About this color
#40B79D is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.112 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.013 away. Black text reads best on it, at 8.47:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.47:1 |
| White text | 2.47:1 |
Values
| HEX | #40B79D |
| RGB | rgb(64, 183, 157) |
| HSL | hsl(167, 48%, 48%) |
| OKLCH | oklch(70.6% 0.112 175.5) |
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 #40B79D | 2.47:1 | Fails | Lc -53.4 | Large or bold text, headings |
| Black text on #40B79D | 8.47:1 | AAA | Lc 55.6 | Large or bold text, headings |
| #40B79D text on white | 2.47:1 | Fails | Lc 48.4 | Large or bold text, headings |
| #40B79D text on black | 8.47:1 | AAA | Lc -53.6 | 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
#EFF8F5
oklch(97.2% 0.01 174.3)
-
Step 100
100
#DDEFE9
oklch(93.7% 0.021 173.9)
-
Step 200
200
#BFE2D8
oklch(88.5% 0.039 176.2)
-
Step 300
300
#90D0BE
oklch(80.9% 0.07 175)
-
Step 400
400 (this color)
#40B79D
oklch(70.6% 0.112 175.5)
-
Step 500
500
#00A086
oklch(63% 0.118 175.6)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004E40
oklch(37.9% 0.071 175.3)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#40B79D 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) | #B1AC9C | 0.118 |
| Deuteranopia (no green cones) | #A09F9F | 0.113 |
| Tritanopia (no blue cones) | #00B9AF | 0.028 |
| Achromatopsia (no color) | #A5A5A5 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B79D
#40B79D
oklch(70.6% 0.112 175.5)
- #D782A3
#D782A3
oklch(70.6% 0.112 355.5)
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 #40B79D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.013
- Topaz #13BBAF ΔE 0.026
- Light Sea Green #20B2AA ΔE 0.031
- Green Blue #01C08D ΔE 0.044
- Tea #65AB7C ΔE 0.049
- Bluey Green #2BB179 ΔE 0.053
- Greenblue #23C48B ΔE 0.053
- Dark Seafoam Green #3EAF76 ΔE 0.053
Use #40B79D 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.