#6683DA
Closest named color: Soft Blue (#6488EA). oklch(62.8% 0.135 268.4), rgb(102, 131, 218).
Aa
Black text reads best on this color (5.82:1).
About this color
#6683DA is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.135 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.025 away. Black text reads best on it, at 5.82:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.82:1 |
| White text | 3.60:1 |
Values
| HEX | #6683DA |
| RGB | rgb(102, 131, 218) |
| HSL | hsl(225, 61%, 63%) |
| OKLCH | oklch(62.8% 0.135 268.4) |
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 #6683DA | 3.60:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #6683DA | 5.82:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #6683DA text on white | 3.60:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #6683DA text on black | 5.82:1 | AA | Lc -38.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#AEC0EC
oklch(80.9% 0.066 267.5)
-
Step 400
400
#859EE3
oklch(70.8% 0.105 268.4)
-
Step 500
500 (this color)
#6683DA
oklch(62.8% 0.135 268.4)
-
Step 600
600
#4F6CC9
oklch(55.6% 0.148 268.3)
-
Step 700
700
#405AAE
oklch(49.2% 0.137 268.1)
-
Step 800
800
#354A8D
oklch(42.8% 0.114 268.2)
-
Step 900
900
#2E3E70
oklch(37.7% 0.088 268.6)
-
Step 950
950
#1B2542
oklch(27.1% 0.056 268.2)
#6683DA 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) | #5F8CDD | 0.024 |
| Deuteranopia (no green cones) | #5282D8 | 0.023 |
| Tritanopia (no blue cones) | #2B96A4 | 0.122 |
| Achromatopsia (no color) | #878787 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6683DA
#6683DA
oklch(62.8% 0.135 268.4)
- #A88300
#A88300
oklch(62.8% 0.128 88.6)
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 #6683DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.050
- Cornflower #6A79F7 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.054
- Faded Blue #658CBB ΔE 0.059
- Cool Blue #4984B8 ΔE 0.064
- Perrywinkle #8F8CE7 ΔE 0.064
Use #6683DA 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.