#669398
Closest named color: Cadet Blue (#5F9EA0). oklch(63.3% 0.049 204.7), rgb(102, 147, 152).
Aa
Black text reads best on this color (6.19:1).
About this color
#669398 is a medium-light, muted teal or cyan. In OKLCH its lightness is 63%, its chroma 0.049 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.030 away. Black text reads best on it, at 6.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.19:1 |
| White text | 3.39:1 |
Values
| HEX | #669398 |
| RGB | rgb(102, 147, 152) |
| HSL | hsl(186, 20%, 50%) |
| OKLCH | oklch(63.3% 0.049 204.7) |
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 #669398 | 3.39:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #669398 | 6.19:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #669398 text on white | 3.39:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #669398 text on black | 6.19:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDD
oklch(88.6% 0.013 202.9)
-
Step 300
300
#AFC5C8
oklch(80.8% 0.024 206.6)
-
Step 400
400
#85A8AC
oklch(70.7% 0.039 204.9)
-
Step 500
500 (this color)
#669398
oklch(63.3% 0.049 204.7)
-
Step 600
600
#4C7D82
oklch(55.7% 0.054 204)
-
Step 700
700
#3C696E
oklch(49% 0.05 204.8)
-
Step 800
800
#32565A
oklch(42.8% 0.042 204.8)
-
Step 900
900
#2D474A
oklch(37.8% 0.032 205)
-
Step 950
950
#1A292B
oklch(26.8% 0.021 206.4)
#669398 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) | #8C8F98 | 0.049 |
| Deuteranopia (no green cones) | #838998 | 0.044 |
| Tritanopia (no blue cones) | #549794 | 0.023 |
| Achromatopsia (no color) | #8B8B8B | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669398
#669398
oklch(63.3% 0.049 204.7)
- #A67F7B
#A67F7B
oklch(63.3% 0.049 25.3)
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 #669398, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.030
- Blue Grey #758DA3 ΔE 0.033
- Light Slate Gray #778899 ΔE 0.037
- Grey Teal #5E9B8A ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.039
- Steel #738595 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.042
Use #669398 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.