#6590E8
Closest named color: Cornflower Blue (#6495ED). oklch(66.2% 0.14 263.4), rgb(101, 144, 232).
Aa
Black text reads best on this color (6.70:1).
About this color
#6590E8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.140 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.014 away. Black text reads best on it, at 6.70:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.70:1 |
| White text | 3.13:1 |
Values
| HEX | #6590E8 |
| RGB | rgb(101, 144, 232) |
| HSL | hsl(220, 74%, 65%) |
| OKLCH | oklch(66.2% 0.14 263.4) |
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 #6590E8 | 3.13:1 | AA large text | Lc -63.6 | Content text, not long reading |
| Black text on #6590E8 | 6.70:1 | AA | Lc 45.9 | Large or bold text, headings |
| #6590E8 text on white | 3.13:1 | AA large text | Lc 58.2 | Large or bold text, headings |
| #6590E8 text on black | 6.70:1 | AA | Lc -43.6 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#AAC1EE
oklch(80.9% 0.069 263.7)
-
Step 400
400
#7DA0E5
oklch(70.8% 0.109 263.3)
-
Step 500
500 (this color)
#6590E8
oklch(66.2% 0.14 263.4)
-
Step 600
600
#436ECB
oklch(55.5% 0.152 263.6)
-
Step 700
700
#355CB0
oklch(49.2% 0.141 263.4)
-
Step 800
800
#2C4B8E
oklch(42.6% 0.117 263.5)
-
Step 900
900
#273F72
oklch(37.6% 0.092 263.6)
-
Step 950
950
#172543
oklch(26.9% 0.059 264)
#6590E8 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) | #6B98EC | 0.023 |
| Deuteranopia (no green cones) | #5B8CE6 | 0.016 |
| Tritanopia (no blue cones) | #00A3B1 | 0.124 |
| Achromatopsia (no color) | #929292 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6590E8
#6590E8
oklch(66.2% 0.14 263.4)
- #BA8A00
#BA8A00
oklch(66.2% 0.136 83.8)
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 #6590E8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.014
- Soft Blue #6488EA ΔE 0.022
- Chefchaouen Blue #4895EF ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.033
- Perrywinkle #8F8CE7 ΔE 0.052
- Lavender Blue #8B88F8 ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.059
- Periwinkle Blue #8F99FB ΔE 0.065
Use #6590E8 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.