#6690FD
Closest named color: Cornflower Blue (#6495ED). oklch(67.5% 0.168 266.2), rgb(102, 144, 253).
Aa
Black text reads best on this color (6.97:1).
About this color
#6690FD is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.168 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.029 away. Black text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.97:1 |
| White text | 3.01:1 |
Values
| HEX | #6690FD |
| RGB | rgb(102, 144, 253) |
| HSL | hsl(223, 97%, 70%) |
| OKLCH | oklch(67.5% 0.168 266.2) |
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 #6690FD | 3.01:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #6690FD | 6.97:1 | AA | Lc 47.5 | Large or bold text, headings |
| #6690FD text on white | 3.01:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #6690FD text on black | 6.97:1 | AA | Lc -45.2 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400 (this color)
#6690FD
oklch(67.5% 0.168 266.2)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#3360F9
oklch(55.7% 0.233 266.1)
-
Step 700
700
#274DD9
oklch(49% 0.217 266.2)
-
Step 800
800
#2141AF
oklch(42.7% 0.179 266.1)
-
Step 900
900
#1F398A
oklch(37.7% 0.139 266.2)
-
Step 950
950
#122251
oklch(27% 0.089 266.3)
#6690FD 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) | #5E9CFF | 0.030 |
| Deuteranopia (no green cones) | #488EFB | 0.030 |
| Tritanopia (no blue cones) | #00A9BA | 0.146 |
| Achromatopsia (no color) | #959595 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6690FD
#6690FD
oklch(67.5% 0.168 266.2)
- #BC8F00
#BC8F00
oklch(67.4% 0.138 86.1)
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 #6690FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.029
- Soft Blue #6488EA ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.038
- Lavender Blue #8B88F8 ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.051
- Cornflower #6A79F7 ΔE 0.056
- Periwinkle #8E82FE ΔE 0.057
Use #6690FD 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.