#6590FF
Closest named color: Cornflower Blue (#6495ED). oklch(67.5% 0.171 266), rgb(101, 144, 255).
Aa
Black text reads best on this color (6.98:1).
About this color
#6590FF is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.171 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.032 away. Black text reads best on it, at 6.98:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.98:1 |
| White text | 3.00:1 |
Values
| HEX | #6590FF |
| RGB | rgb(101, 144, 255) |
| HSL | hsl(223, 100%, 70%) |
| OKLCH | oklch(67.5% 0.171 266) |
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 #6590FF | 3.00:1 | AA large text | Lc -61.8 | Content text, not long reading |
| Black text on #6590FF | 6.98:1 | AA | Lc 47.6 | Large or bold text, headings |
| #6590FF text on white | 3.00:1 | AA large text | Lc 56.5 | Large or bold text, headings |
| #6590FF text on black | 6.98:1 | AA | Lc -45.3 | 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)
#6590FF
oklch(67.5% 0.171 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#325FFB
oklch(55.6% 0.237 266.1)
-
Step 700
700
#264DDB
oklch(49.2% 0.22 266)
-
Step 800
800
#2040B1
oklch(42.7% 0.183 266.1)
-
Step 900
900
#1E388C
oklch(37.7% 0.143 266.3)
-
Step 950
950
#112252
oklch(27% 0.091 265.8)
#6590FF 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) | #5D9CFF | 0.031 |
| Deuteranopia (no green cones) | #458EFD | 0.031 |
| Tritanopia (no blue cones) | #00A9BB | 0.147 |
| Achromatopsia (no color) | #959595 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6590FF
#6590FF
oklch(67.5% 0.171 266)
- #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 #6590FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.032
- Soft Blue #6488EA ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.039
- Lavender Blue #8B88F8 ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.053
- Cornflower #6A79F7 ΔE 0.056
- Periwinkle #8E82FE ΔE 0.058
Use #6590FF 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.