#637019
Closest named color: Browny Green (#6F6C0A). oklch(51.7% 0.109 117.9), rgb(99, 112, 25).
Aa
White text reads best on this color (5.43:1).
About this color
#637019 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.109 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Browny Green (#6F6C0A), ΔE 0.019 away. White text reads best on it, at 5.43:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Browny Green (#6F6C0A) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #637019 |
| RGB | rgb(99, 112, 25) |
| HSL | hsl(69, 64%, 27%) |
| OKLCH | oklch(51.7% 0.109 117.9) |
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 #637019 | 5.43:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #637019 | 3.86:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #637019 text on white | 5.43:1 | AA | Lc 77.0 | Fine for body text |
| #637019 text on black | 3.86:1 | AA large text | Lc -24.7 | 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 700.
-
Step 50
50
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE0
oklch(93.6% 0.015 115)
-
Step 200
200
#D7DCC7
oklch(88.5% 0.029 117.9)
-
Step 300
300
#BDC6A0
oklch(81% 0.053 118.4)
-
Step 400
400
#9CA86B
oklch(70.7% 0.084 117.7)
-
Step 500
500
#849241
oklch(63.1% 0.108 117.8)
-
Step 600
600
#6E7C1D
oklch(55.7% 0.117 117.8)
-
Step 700
700 (this color)
#637019
oklch(51.7% 0.109 117.9)
-
Step 800
800
#4B5510
oklch(42.7% 0.09 117.7)
-
Step 900
900
#3E4616
oklch(37.6% 0.07 117.9)
-
Step 950
950
#24290E
oklch(26.9% 0.045 118.2)
#637019 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) | #786906 | 0.035 |
| Deuteranopia (no green cones) | #776A21 | 0.037 |
| Tritanopia (no blue cones) | #69695F | 0.094 |
| Achromatopsia (no color) | #6A6A6A | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637019
#637019
oklch(51.7% 0.109 117.9)
- #70599E
#70599E
oklch(51.7% 0.108 297.9)
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 #637019, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Browny Green #6F6C0A ΔE 0.019
- Brown Green #706C11 ΔE 0.021
- Muddy Green #657432 ΔE 0.022
- Mud Green #606602 ΔE 0.030
- Dark Olive Green #556B2F ΔE 0.032
- Olive Green #677A04 ΔE 0.034
- Dark Moss Green #606C38 ΔE 0.034
- Murky Green #6C7A0E ΔE 0.035
Use #637019 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.