#669EB3
Closest named color: Greyblue (#77A1B5). oklch(66.8% 0.066 223.7), rgb(102, 158, 179).
Aa
Black text reads best on this color (7.10:1).
About this color
#669EB3 is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.066 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.022 away. Black text reads best on it, at 7.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #669EB3 |
| RGB | rgb(102, 158, 179) |
| HSL | hsl(196, 34%, 55%) |
| OKLCH | oklch(66.8% 0.066 223.7) |
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 #669EB3 | 2.95:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #669EB3 | 7.10:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #669EB3 text on white | 2.95:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #669EB3 text on black | 7.10:1 | AAA | Lc -45.8 | Large or bold text, headings |
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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#ABC6D0
oklch(81% 0.032 222.1)
-
Step 400
400
#7DA8B9
oklch(70.6% 0.053 224.3)
-
Step 500
500 (this color)
#669EB3
oklch(66.8% 0.066 223.7)
-
Step 600
600
#3F7D93
oklch(55.7% 0.072 223.7)
-
Step 700
700
#30697D
oklch(49.1% 0.067 223.8)
-
Step 800
800
#295665
oklch(42.8% 0.055 222.2)
-
Step 900
900
#264753
oklch(37.8% 0.044 223.6)
-
Step 950
950
#172930
oklch(26.9% 0.027 224.6)
#669EB3 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) | #929BB4 | 0.053 |
| Deuteranopia (no green cones) | #8692B3 | 0.048 |
| Tritanopia (no blue cones) | #45A5A5 | 0.044 |
| Achromatopsia (no color) | #969696 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669EB3
#669EB3
oklch(66.8% 0.066 223.7)
- #B88874
#B88874
oklch(66.8% 0.066 43.6)
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 #669EB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.022
- Cadet Blue #5F9EA0 ΔE 0.031
- Bluegrey #85A3B2 ΔE 0.040
- Bluey Grey #89A0B0 ΔE 0.042
- Cool Gray #8D99AE ΔE 0.046
- Silver Lake Blue #778DA9 ΔE 0.047
- Blue Grey #758DA3 ΔE 0.048
- Dull Teal #5F9E8F ΔE 0.056
Use #669EB3 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.