#669BA9
Closest named color: Cadet Blue (#5F9EA0). oklch(65.8% 0.06 216.2), rgb(102, 155, 169).
Aa
Black text reads best on this color (6.82:1).
About this color
#669BA9 is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.060 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.020 away. Black text reads best on it, at 6.82:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.82:1 |
| White text | 3.07:1 |
Values
| HEX | #669BA9 |
| RGB | rgb(102, 155, 169) |
| HSL | hsl(193, 28%, 53%) |
| OKLCH | oklch(65.8% 0.06 216.2) |
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 #669BA9 | 3.07:1 | AA large text | Lc -63.0 | Content text, not long reading |
| Black text on #669BA9 | 6.82:1 | AA | Lc 46.5 | Large or bold text, headings |
| #669BA9 text on white | 3.07:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #669BA9 text on black | 6.82:1 | AA | Lc -44.2 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCE0
oklch(88.5% 0.016 216.7)
-
Step 300
300
#ACC6CD
oklch(80.9% 0.03 215.8)
-
Step 400
400
#80A8B3
oklch(70.6% 0.046 216.5)
-
Step 500
500 (this color)
#669BA9
oklch(65.8% 0.06 216.2)
-
Step 600
600
#437D8C
oklch(55.6% 0.065 216.6)
-
Step 700
700
#346977
oklch(49% 0.06 217.2)
-
Step 800
800
#2C5661
oklch(42.7% 0.05 216.8)
-
Step 900
900
#28474F
oklch(37.7% 0.039 216.1)
-
Step 950
950
#182A2E
oklch(27.1% 0.025 213.2)
#669BA9 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) | #9198AA | 0.053 |
| Deuteranopia (no green cones) | #878FA9 | 0.050 |
| Tritanopia (no blue cones) | #4BA09F | 0.035 |
| Achromatopsia (no color) | #939393 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669BA9
#669BA9
oklch(65.8% 0.06 216.2)
- #B38578
#B38578
oklch(65.8% 0.06 36.4)
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 #669BA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.020
- Greyblue #77A1B5 ΔE 0.031
- Blue Grey #758DA3 ΔE 0.040
- Silver Lake Blue #778DA9 ΔE 0.043
- Dull Teal #5F9E8F ΔE 0.044
- Bluegrey #85A3B2 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.049
Use #669BA9 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.