#638404
Closest named color: Sap Green (#5C8B15). oklch(56.7% 0.142 125.3), rgb(99, 132, 4).
Aa
Black text reads best on this color (4.83:1).
About this color
#638404 is a medium-dark, vivid green. 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 0.020 away. Black text reads best on it, at 4.83:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #638404 |
| RGB | rgb(99, 132, 4) |
| HSL | hsl(75, 94%, 27%) |
| OKLCH | oklch(56.7% 0.142 125.3) |
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 #638404 | 4.34:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #638404 | 4.83:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #638404 text on white | 4.34:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #638404 text on black | 4.83:1 | AA | Lc -31.8 | 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
#D3DEC5
oklch(88.5% 0.036 126.6)
-
Step 300
300
#B7C89C
oklch(80.8% 0.063 124.9)
-
Step 400
400
#92AC64
oklch(70.7% 0.102 125.1)
-
Step 500
500
#779735
oklch(63.2% 0.13 125.4)
-
Step 600
600 (this color)
#638404
oklch(56.7% 0.142 125.3)
-
Step 700
700
#506C00
oklch(49.1% 0.124 125.4)
-
Step 800
800
#415800
oklch(42.6% 0.107 125.2)
-
Step 900
900
#37490E
oklch(37.7% 0.085 125.3)
-
Step 950
950
#202B0B
oklch(27% 0.054 125.8)
#638404 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) | #8C7A00 | 0.065 |
| Deuteranopia (no green cones) | #877919 | 0.063 |
| Tritanopia (no blue cones) | #687D6F | 0.115 |
| Achromatopsia (no color) | #797979 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #638404
#638404
oklch(56.7% 0.142 125.3)
- #8B5DB8
#8B5DB8
oklch(56.7% 0.142 305.7)
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 #638404, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.020
- Mossy Green #638B27 ΔE 0.023
- Swamp Green #748500 ΔE 0.024
- Olive Green #677A04 ΔE 0.029
- Murky Green #6C7A0E ΔE 0.032
- Olive Drab #6B8E23 ΔE 0.033
- Moss Green #658B38 ΔE 0.033
- Swamp #698339 ΔE 0.037
Use #638404 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.