#669DBD
Closest named color: Greyblue (#77A1B5). oklch(67% 0.075 235), rgb(102, 157, 189).
Aa
Black text reads best on this color (7.12:1).
About this color
#669DBD is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.075 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.027 away. Black text reads best on it, at 7.12:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.12:1 |
| White text | 2.94:1 |
Values
| HEX | #669DBD |
| RGB | rgb(102, 157, 189) |
| HSL | hsl(202, 40%, 57%) |
| OKLCH | oklch(67% 0.075 235) |
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 #669DBD | 2.94:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #669DBD | 7.12:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #669DBD text on white | 2.94:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #669DBD text on black | 7.12:1 | AAA | Lc -45.9 | 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 400.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DB
oklch(80.9% 0.047 235.3)
-
Step 400
400 (this color)
#669DBD
oklch(67% 0.075 235)
-
Step 500
500
#4893BB
oklch(63.2% 0.096 234.4)
-
Step 600
600
#247CA7
oklch(55.5% 0.104 234.9)
-
Step 700
700
#15688F
oklch(49% 0.097 235.2)
-
Step 800
800
#165574
oklch(42.6% 0.08 235.1)
-
Step 900
900
#1A475E
oklch(37.8% 0.063 234.2)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#669DBD 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) | #8E9CBF | 0.048 |
| Deuteranopia (no green cones) | #8292BD | 0.042 |
| Tritanopia (no blue cones) | #3FA5A7 | 0.057 |
| Achromatopsia (no color) | #969696 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669DBD
#669DBD
oklch(67% 0.075 235)
- #BA8969
#BA8969
oklch(67% 0.075 54.2)
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 #669DBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.027
- Bluegrey #85A3B2 ΔE 0.045
- Bluey Grey #89A0B0 ΔE 0.046
- Cadet Blue #5F9EA0 ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.047
- Faded Blue #658CBB ΔE 0.048
- Cool Gray #8D99AE ΔE 0.048
- Blue Grey #758DA3 ΔE 0.050
Use #669DBD 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.