#40A378
Closest named color: Jade (#1FA774). oklch(64.5% 0.114 161.8), rgb(64, 163, 120).
Aa
Black text reads best on this color (6.72:1).
About this color
#40A378 is a medium-light, moderately saturated green. In OKLCH its lightness is 65%, its chroma 0.114 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.021 away. Black text reads best on it, at 6.72:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.72:1 |
| White text | 3.12:1 |
Values
| HEX | #40A378 |
| RGB | rgb(64, 163, 120) |
| HSL | hsl(154, 44%, 45%) |
| OKLCH | oklch(64.5% 0.114 161.8) |
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 #40A378 | 3.12:1 | AA large text | Lc -63.4 | Content text, not long reading |
| Black text on #40A378 | 6.72:1 | AA | Lc 46.1 | Large or bold text, headings |
| #40A378 text on white | 3.12:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #40A378 text on black | 6.72:1 | AA | Lc -43.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EDE6
oklch(93.5% 0.016 160.6)
-
Step 200
200
#C8E0D3
oklch(88.5% 0.031 162.1)
-
Step 300
300
#A1CCB6
oklch(80.8% 0.055 162.6)
-
Step 400
400
#6BB28F
oklch(70.7% 0.089 161.5)
-
Step 500
500 (this color)
#40A378
oklch(64.5% 0.114 161.8)
-
Step 600
600
#00895C
oklch(55.7% 0.123 161.5)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#114D35
oklch(37.6% 0.073 162)
-
Step 950
950
#0D2D1F
oklch(26.9% 0.046 161.9)
#40A378 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) | #A19876 | 0.110 |
| Deuteranopia (no green cones) | #938E7B | 0.106 |
| Tritanopia (no blue cones) | #09A397 | 0.047 |
| Achromatopsia (no color) | #929292 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A378
#40A378
oklch(64.5% 0.114 161.8)
- #BC71A1
#BC71A1
oklch(64.5% 0.112 341.8)
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 #40A378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.021
- Ocean Green #3D9973 ΔE 0.029
- Dark Seafoam Green #3EAF76 ΔE 0.037
- Seaweed Green #35AD6B ΔE 0.040
- Bluey Green #2BB179 ΔE 0.041
- Tea #65AB7C ΔE 0.042
- Algae #54AC68 ΔE 0.042
- Persian Green #2A9D8F ΔE 0.044
Use #40A378 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.