#668C04
Closest named color: Sap Green (#5C8B15). oklch(59% 0.15 126.5), rgb(102, 140, 4).
Aa
Black text reads best on this color (5.31:1).
About this color
#668C04 is a medium-dark, vivid green. In OKLCH its lightness is 59%, its chroma 0.150 and its hue 126°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.013 away. Black text reads best on it, at 5.31:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 5.31:1 |
| White text | 3.94:1 |
Values
| HEX | #668C04 |
| RGB | rgb(102, 140, 4) |
| HSL | hsl(77, 94%, 28%) |
| OKLCH | oklch(59% 0.15 126.5) |
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 #668C04 | 3.94:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #668C04 | 5.31:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #668C04 text on white | 3.94:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #668C04 text on black | 5.31:1 | AA | Lc -35.0 | 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 600.
-
Step 50
50
#F4F7F0
oklch(97.2% 0.01 125.7)
-
Step 100
100
#E6ECDF
oklch(93.5% 0.018 127.1)
-
Step 200
200
#D3DEC4
oklch(88.5% 0.037 125.9)
-
Step 300
300
#B5C99A
oklch(80.9% 0.067 126.6)
-
Step 400
400
#8FAD61
oklch(70.7% 0.108 126.6)
-
Step 500
500
#74982F
oklch(63.2% 0.138 126.4)
-
Step 600
600 (this color)
#668C04
oklch(59% 0.15 126.5)
-
Step 700
700
#4E6D00
oklch(49.2% 0.126 126.7)
-
Step 800
800
#3F5900
oklch(42.7% 0.11 126.7)
-
Step 900
900
#354A09
oklch(37.8% 0.091 126.7)
-
Step 950
950
#1F2B09
oklch(26.9% 0.056 126.5)
#668C04 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) | #948200 | 0.070 |
| Deuteranopia (no green cones) | #8F7F1B | 0.071 |
| Tritanopia (no blue cones) | #6B8576 | 0.120 |
| Achromatopsia (no color) | #808080 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668C04
#668C04
oklch(59% 0.15 126.5)
- #9462C2
#9462C2
oklch(59% 0.149 306.4)
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 #668C04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.013
- Olive Drab #6B8E23 ΔE 0.016
- Mossy Green #638B27 ΔE 0.016
- Dark Yellow Green #728F02 ΔE 0.019
- Swamp Green #748500 ΔE 0.026
- Moss Green #658B38 ΔE 0.031
- Fern Green #548D44 ΔE 0.042
- Khaki Green #728639 ΔE 0.045
Use #668C04 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.