#6699CA
Closest named color: Faded Blue (#658CBB). oklch(66.7% 0.091 248.4), rgb(102, 153, 202).
Aa
Black text reads best on this color (6.97:1).
About this color
#6699CA is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.091 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.038 away. Black text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.97:1 |
| White text | 3.01:1 |
Values
| HEX | #6699CA |
| RGB | rgb(102, 153, 202) |
| HSL | hsl(209, 49%, 60%) |
| OKLCH | oklch(66.7% 0.091 248.4) |
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 #6699CA | 3.01:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #6699CA | 6.97:1 | AA | Lc 47.3 | Large or bold text, headings |
| #6699CA text on white | 3.01:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #6699CA text on black | 6.97:1 | AA | Lc -45.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC4DD
oklch(81% 0.045 248.4)
-
Step 400
400
#7DA5CC
oklch(70.7% 0.072 248.2)
-
Step 500
500 (this color)
#6699CA
oklch(66.7% 0.091 248.4)
-
Step 600
600
#4077AB
oklch(55.5% 0.1 248.9)
-
Step 700
700
#326493
oklch(49.1% 0.093 249)
-
Step 800
800
#2A5277
oklch(42.7% 0.077 248.4)
-
Step 900
900
#274460
oklch(37.7% 0.06 248.9)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#6699CA 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) | #859ACC | 0.037 |
| Deuteranopia (no green cones) | #7890C9 | 0.030 |
| Tritanopia (no blue cones) | #36A4AA | 0.077 |
| Achromatopsia (no color) | #959595 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6699CA
#6699CA
oklch(66.7% 0.091 248.4)
- #B98A54
#B98A54
oklch(66.7% 0.091 69)
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 #6699CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.038
- Greyblue #77A1B5 ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.057
- Blue Grey #758DA3 ΔE 0.059
- Cool Gray #8D99AE ΔE 0.060
- Bluey Grey #89A0B0 ΔE 0.063
- Bluegrey #85A3B2 ΔE 0.063
Use #6699CA 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.