#636A01
Closest named color: Mud Green (#606602). oklch(50.1% 0.112 114.2), rgb(99, 106, 1).
Aa
White text reads best on this color (5.84:1).
About this color
#636A01 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 50%, its chroma 0.112 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mud Green (#606602), ΔE 0.013 away. White text reads best on it, at 5.84:1.
| Hue family | Yellows |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Mud Green (#606602) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #636A01 |
| RGB | rgb(99, 106, 1) |
| HSL | hsl(64, 98%, 21%) |
| OKLCH | oklch(50.1% 0.112 114.2) |
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 #636A01 | 5.84:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #636A01 | 3.59:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #636A01 text on white | 5.84:1 | AA | Lc 79.1 | Fine for body text |
| #636A01 text on black | 3.59:1 | AA large text | Lc -22.7 | 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
#E9EBDF
oklch(93.5% 0.016 114.4)
-
Step 200
200
#D8DCC5
oklch(88.5% 0.031 115)
-
Step 300
300
#BFC59D
oklch(80.8% 0.055 114.6)
-
Step 400
400
#9FA767
oklch(70.7% 0.087 114.5)
-
Step 500
500
#88913A
oklch(63.1% 0.112 114.6)
-
Step 600
600
#737B0E
oklch(55.8% 0.121 114.3)
-
Step 700
700 (this color)
#636A01
oklch(50.1% 0.112 114.2)
-
Step 800
800
#4E5406
oklch(42.6% 0.093 114.5)
-
Step 900
900
#414612
oklch(37.8% 0.073 114.6)
-
Step 950
950
#26290C
oklch(27% 0.046 114.5)
#636A01 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) | #736400 | 0.030 |
| Deuteranopia (no green cones) | #726610 | 0.029 |
| Tritanopia (no blue cones) | #6A6359 | 0.099 |
| Achromatopsia (no color) | #656565 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636A01
#636A01
oklch(50.1% 0.112 114.2)
- #68559D
#68559D
oklch(50.1% 0.113 294.1)
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 #636A01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Green #606602 ΔE 0.013
- Browny Green #6F6C0A ΔE 0.021
- Brown Green #706C11 ΔE 0.024
- Greeny Brown #696006 ΔE 0.031
- Dark Olive Green #556B2F ΔE 0.031
- Camo Green #526525 ΔE 0.036
- Muddy Green #657432 ΔE 0.038
- Dark Moss Green #606C38 ΔE 0.038
Use #636A01 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.