#6683BC
Closest named color: Faded Blue (#658CBB). oklch(61.1% 0.093 263.2), rgb(102, 131, 188).
Aa
Black text reads best on this color (5.53:1).
About this color
#6683BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.093 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.026 away. Black text reads best on it, at 5.53:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #6683BC |
| RGB | rgb(102, 131, 188) |
| HSL | hsl(220, 39%, 57%) |
| OKLCH | oklch(61.1% 0.093 263.2) |
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 #6683BC | 3.79:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #6683BC | 5.53:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #6683BC text on white | 3.79:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #6683BC text on black | 5.53:1 | AA | Lc -36.3 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0D9EA
oklch(88.4% 0.025 263.3)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#89A1CF
oklch(70.8% 0.073 263.2)
-
Step 500
500 (this color)
#6683BC
oklch(61.1% 0.093 263.2)
-
Step 600
600
#5472AF
oklch(55.6% 0.102 263.5)
-
Step 700
700
#445F96
oklch(49% 0.094 263.5)
-
Step 800
800
#384E7A
oklch(42.7% 0.078 263.3)
-
Step 900
900
#304162
oklch(37.6% 0.061 262.9)
-
Step 950
950
#1C2639
oklch(26.9% 0.038 262.7)
#6683BC 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) | #6E87BE | 0.016 |
| Deuteranopia (no green cones) | #657FBB | 0.011 |
| Tritanopia (no blue cones) | #458F97 | 0.084 |
| Achromatopsia (no color) | #838383 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6683BC
#6683BC
oklch(61.1% 0.093 263.2)
- #9F7E3C
#9F7E3C
oklch(61.1% 0.094 82.7)
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 #6683BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.026
- Off Blue #5684AE ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.031
- Cool Blue #4984B8 ΔE 0.032
- Steel Blue #4682B4 ΔE 0.038
- Silver Lake Blue #778DA9 ΔE 0.052
- Lavender Gray #7E7F9A ΔE 0.057
- Blue Grey #758DA3 ΔE 0.058
Use #6683BC 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.