#669D28
Closest named color: Flat Green (#699D4C). oklch(63.5% 0.156 131.7), rgb(102, 157, 40).
Aa
Black text reads best on this color (6.41:1).
About this color
#669D28 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.156 and its hue 132°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Flat Green (#699D4C), ΔE 0.033 away. Black text reads best on it, at 6.41:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #669D28 |
| RGB | rgb(102, 157, 40) |
| HSL | hsl(88, 59%, 39%) |
| OKLCH | oklch(63.5% 0.156 131.7) |
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 #669D28 | 3.27:1 | AA large text | Lc -65.3 | Content text, not long reading |
| Black text on #669D28 | 6.41:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #669D28 text on white | 3.27:1 | AA large text | Lc 59.8 | Large or bold text, headings |
| #669D28 text on black | 6.41:1 | AA | Lc -41.9 | 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 500.
-
Step 50
50
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E4EDDE
oklch(93.5% 0.022 132.5)
-
Step 200
200
#CFDFC3
oklch(88.4% 0.041 131.7)
-
Step 300
300
#AFCB98
oklch(80.8% 0.076 131.3)
-
Step 400
400
#84B05D
oklch(70.6% 0.122 131.8)
-
Step 500
500 (this color)
#669D28
oklch(63.5% 0.156 131.7)
-
Step 600
600
#508400
oklch(55.5% 0.153 131.6)
-
Step 700
700
#426F00
oklch(49% 0.136 131.8)
-
Step 800
800
#365B00
oklch(42.7% 0.117 131.5)
-
Step 900
900
#2C4C03
oklch(37.7% 0.102 132)
-
Step 950
950
#1A2D07
oklch(27.1% 0.065 132.3)
#669D28 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) | #A49111 | 0.085 |
| Deuteranopia (no green cones) | #9C8D33 | 0.086 |
| Tritanopia (no blue cones) | #689686 | 0.118 |
| Achromatopsia (no color) | #8E8E8E | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669D28
#669D28
oklch(63.5% 0.156 131.7)
- #AA6BCE
#AA6BCE
oklch(63.5% 0.156 312.1)
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 #669D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.033
- Mid Green #50A747 ΔE 0.033
- Muted Green #5FA052 ΔE 0.035
- Dark Yellow Green #728F02 ΔE 0.038
- Off Green #6BA353 ΔE 0.040
- Leaf #71AA34 ΔE 0.040
- Fern #63A950 ΔE 0.041
- Leaf Green #5CA904 ΔE 0.041
Use #669D28 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.