#647D00
Closest named color: Olive Green (#677A04). oklch(55% 0.134 122.5), rgb(100, 125, 0).
Aa
White text reads best on this color (4.69:1).
About this color
#647D00 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 55%, its chroma 0.134 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.010 away. White text reads best on it, at 4.69:1.
| Hue family | Yellows |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #647D00 |
| RGB | rgb(100, 125, 0) |
| HSL | hsl(72, 100%, 25%) |
| OKLCH | oklch(55% 0.134 122.5) |
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 #647D00 | 4.69:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #647D00 | 4.47:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #647D00 text on white | 4.69:1 | AA | Lc 72.4 | Content text, not long reading |
| #647D00 text on black | 4.47:1 | AA large text | Lc -29.3 | Dividers and decoration only |
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
#B9C79C
oklch(80.8% 0.06 122.4)
-
Step 400
400
#96AB65
oklch(70.8% 0.097 122.5)
-
Step 500
500
#7C9537
oklch(63.1% 0.124 122.6)
-
Step 600
600 (this color)
#647D00
oklch(55% 0.134 122.5)
-
Step 700
700
#556B00
oklch(49.2% 0.12 122.6)
-
Step 800
800
#455702
oklch(42.6% 0.103 122.5)
-
Step 900
900
#3A4810
oklch(37.7% 0.08 122.6)
-
Step 950
950
#222A0B
oklch(26.9% 0.051 122.1)
#647D00 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) | #857400 | 0.054 |
| Deuteranopia (no green cones) | #827415 | 0.053 |
| Tritanopia (no blue cones) | #6A7669 | 0.112 |
| Achromatopsia (no color) | #747474 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647D00
#647D00
oklch(55% 0.134 122.5)
- #815BB1
#815BB1
oklch(54.9% 0.134 302.6)
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 #647D00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.010
- Murky Green #6C7A0E ΔE 0.016
- Swamp Green #748500 ΔE 0.034
- Swamp #698339 ΔE 0.037
- Sap Green #5C8B15 ΔE 0.039
- Mossy Green #638B27 ΔE 0.040
- Olive #808000 ΔE 0.043
- Military Green #667C3E ΔE 0.043
Use #647D00 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.