#668605
Closest named color: Sap Green (#5C8B15). oklch(57.4% 0.142 124.8), rgb(102, 134, 5).
Aa
Black text reads best on this color (4.97:1).
About this color
#668605 is a medium-dark, vivid yellow. In OKLCH its lightness is 57%, its chroma 0.142 and its hue 125°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.017 away. Black text reads best on it, at 4.97:1.
| Hue family | Yellows |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 4.97:1 |
| White text | 4.21:1 |
Values
| HEX | #668605 |
| RGB | rgb(102, 134, 5) |
| HSL | hsl(75, 93%, 27%) |
| OKLCH | oklch(57.4% 0.142 124.8) |
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 #668605 | 4.21:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #668605 | 4.97:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #668605 text on white | 4.21:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #668605 text on black | 4.97:1 | AA | Lc -32.7 | 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
#F4F6F0
oklch(97% 0.008 121.6)
-
Step 100
100
#E7ECDF
oklch(93.6% 0.018 124)
-
Step 200
200
#D4DEC4
oklch(88.6% 0.037 124.3)
-
Step 300
300
#B7C89B
oklch(80.8% 0.064 124.6)
-
Step 400
400
#92AC63
oklch(70.7% 0.103 125)
-
Step 500
500
#789733
oklch(63.2% 0.132 124.8)
-
Step 600
600 (this color)
#668605
oklch(57.4% 0.142 124.8)
-
Step 700
700
#516C00
oklch(49.2% 0.123 125)
-
Step 800
800
#425800
oklch(42.6% 0.107 124.6)
-
Step 900
900
#37490D
oklch(37.7% 0.085 125.2)
-
Step 950
950
#202B0A
oklch(27% 0.055 125.5)
#668605 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) | #8E7C00 | 0.063 |
| Deuteranopia (no green cones) | #8A7B1A | 0.063 |
| Tritanopia (no blue cones) | #6B7F71 | 0.116 |
| Achromatopsia (no color) | #7B7B7B | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668605
#668605
oklch(57.4% 0.142 124.8)
- #8C60BB
#8C60BB
oklch(57.5% 0.141 304.7)
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 #668605, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.017
- Mossy Green #638B27 ΔE 0.018
- Swamp Green #748500 ΔE 0.019
- Olive Drab #6B8E23 ΔE 0.026
- Moss Green #658B38 ΔE 0.030
- Dark Yellow Green #728F02 ΔE 0.032
- Olive Green #677A04 ΔE 0.035
- Murky Green #6C7A0E ΔE 0.036
Use #668605 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.