#678F00
Closest named color: Dark Yellow Green (#728F02). oklch(59.8% 0.154 126.8), rgb(103, 143, 0).
Aa
Black text reads best on this color (5.50:1).
About this color
#678F00 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.154 and its hue 127°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Yellow Green (#728F02), ΔE 0.014 away. Black text reads best on it, at 5.50:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Yellow Green (#728F02) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #678F00 |
| RGB | rgb(103, 143, 0) |
| HSL | hsl(77, 100%, 28%) |
| OKLCH | oklch(59.8% 0.154 126.8) |
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 #678F00 | 3.81:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #678F00 | 5.50:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #678F00 text on white | 3.81:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #678F00 text on black | 5.50:1 | AA | Lc -36.3 | 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
#F4F7F0
oklch(97.2% 0.01 125.7)
-
Step 100
100
#E6EDDD
oklch(93.6% 0.023 126.2)
-
Step 200
200
#D2DFC1
oklch(88.6% 0.043 126.4)
-
Step 300
300
#B4CA96
oklch(80.9% 0.074 126.6)
-
Step 400
400
#8DAE58
oklch(70.7% 0.12 126.6)
-
Step 500
500 (this color)
#678F00
oklch(59.8% 0.154 126.8)
-
Step 600
600
#5D8100
oklch(55.5% 0.142 126.6)
-
Step 700
700
#4D6D00
oklch(49.1% 0.127 127.1)
-
Step 800
800
#3F5900
oklch(42.7% 0.11 126.7)
-
Step 900
900
#344A00
oklch(37.7% 0.097 126.5)
-
Step 950
950
#1E2C04
oklch(27.1% 0.064 127)
#678F00 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) | #978400 | 0.073 |
| Deuteranopia (no green cones) | #92821A | 0.073 |
| Tritanopia (no blue cones) | #6C8879 | 0.124 |
| Achromatopsia (no color) | #838383 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678F00
#678F00
oklch(59.8% 0.154 126.8)
- #9863C6
#9863C6
oklch(59.8% 0.153 307.1)
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 #678F00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Yellow Green #728F02 ΔE 0.014
- Olive Drab #6B8E23 ΔE 0.017
- Sap Green #5C8B15 ΔE 0.020
- Mossy Green #638B27 ΔE 0.022
- Swamp Green #748500 ΔE 0.032
- Moss Green #658B38 ΔE 0.035
- Fern Green #548D44 ΔE 0.046
- Grass Green #3F9B0B ΔE 0.048
Use #678F00 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.