#678100
Closest named color: Olive Green (#677A04). oklch(56.2% 0.137 122.6), rgb(103, 129, 0).
Aa
Black text reads best on this color (4.71:1).
About this color
#678100 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 56%, its chroma 0.137 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.021 away. Black text reads best on it, at 4.71:1.
| Hue family | Yellows |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #678100 |
| RGB | rgb(103, 129, 0) |
| HSL | hsl(72, 100%, 25%) |
| OKLCH | oklch(56.2% 0.137 122.6) |
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 #678100 | 4.45:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #678100 | 4.71:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #678100 text on white | 4.45:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #678100 text on black | 4.71:1 | AA | Lc -31.0 | 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
#F4F6F0
oklch(97% 0.008 121.6)
-
Step 100
100
#E7ECDF
oklch(93.6% 0.018 124)
-
Step 200
200
#D5DDC5
oklch(88.5% 0.033 122.1)
-
Step 300
300
#B9C89C
oklch(81% 0.062 123.1)
-
Step 400
400
#95AB64
oklch(70.7% 0.099 123)
-
Step 500
500
#7C9534
oklch(63% 0.126 122.4)
-
Step 600
600 (this color)
#678100
oklch(56.2% 0.137 122.6)
-
Step 700
700
#556B00
oklch(49.2% 0.12 122.6)
-
Step 800
800
#455700
oklch(42.6% 0.104 122.4)
-
Step 900
900
#3A480E
oklch(37.7% 0.082 122.4)
-
Step 950
950
#222A0B
oklch(26.9% 0.051 122.1)
#678100 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) | #897800 | 0.055 |
| Deuteranopia (no green cones) | #867716 | 0.056 |
| Tritanopia (no blue cones) | #6D7A6D | 0.115 |
| Achromatopsia (no color) | #777777 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678100
#678100
oklch(56.2% 0.137 122.6)
- #855EB7
#855EB7
oklch(56.2% 0.138 302.4)
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 #678100, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.021
- Swamp Green #748500 ΔE 0.023
- Murky Green #6C7A0E ΔE 0.023
- Mossy Green #638B27 ΔE 0.029
- Sap Green #5C8B15 ΔE 0.029
- Swamp #698339 ΔE 0.034
- Olive #808000 ΔE 0.036
- Moss Green #658B38 ΔE 0.036
Use #678100 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.