#669581
Closest named color: Grey Teal (#5E9B8A). oklch(63% 0.059 166.2), rgb(102, 149, 129).
Aa
Black text reads best on this color (6.18:1).
About this color
#669581 is a medium-light, muted green. In OKLCH its lightness is 63%, its chroma 0.059 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.018 away. Black text reads best on it, at 6.18:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #669581 |
| RGB | rgb(102, 149, 129) |
| HSL | hsl(154, 19%, 49%) |
| OKLCH | oklch(63% 0.059 166.2) |
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 #669581 | 3.39:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #669581 | 6.18:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #669581 text on white | 3.39:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #669581 text on black | 6.18:1 | AA | Lc -40.3 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE8
oklch(93.7% 0.009 161.3)
-
Step 200
200
#D0DDD7
oklch(88.6% 0.016 166.7)
-
Step 300
300
#B0C7BC
oklch(80.9% 0.029 165.3)
-
Step 400
400
#86AA9A
oklch(70.7% 0.046 166.2)
-
Step 500
500 (this color)
#669581
oklch(63% 0.059 166.2)
-
Step 600
600
#4C806B
oklch(55.7% 0.065 166.4)
-
Step 700
700
#3D6C59
oklch(49.2% 0.061 166.1)
-
Step 800
800
#335849
oklch(42.8% 0.05 166.3)
-
Step 900
900
#2D483D
oklch(37.6% 0.038 166.9)
-
Step 950
950
#1B2A24
oklch(26.9% 0.023 167.9)
#669581 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) | #938F80 | 0.060 |
| Deuteranopia (no green cones) | #8B8982 | 0.057 |
| Tritanopia (no blue cones) | #5B958F | 0.022 |
| Achromatopsia (no color) | #8B8B8B | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669581
#669581
oklch(63% 0.059 166.2)
- #A47B91
#A47B91
oklch(63% 0.059 345.5)
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 #669581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.018
- Dull Teal #5F9E8F ΔE 0.027
- Green Grey #77926F ΔE 0.028
- Slate Green #658D6D ΔE 0.031
- Dusty Teal #4C9085 ΔE 0.033
- Sea #3C9992 ΔE 0.040
- Cadet Blue #5F9EA0 ΔE 0.044
- Persian Green #2A9D8F ΔE 0.048
Use #669581 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.