#6587DB
Closest named color: Soft Blue (#6488EA). oklch(63.6% 0.132 266.1), rgb(101, 135, 219).
Aa
Black text reads best on this color (6.04:1).
About this color
#6587DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.132 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.022 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #6587DB |
| RGB | rgb(101, 135, 219) |
| HSL | hsl(223, 62%, 63%) |
| OKLCH | oklch(63.6% 0.132 266.1) |
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 #6587DB | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #6587DB | 6.04:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #6587DB text on white | 3.47:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #6587DB text on black | 6.04:1 | AA | Lc -39.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#ADC0EB
oklch(80.8% 0.065 266.3)
-
Step 400
400
#829FE2
oklch(70.7% 0.104 265.9)
-
Step 500
500 (this color)
#6587DB
oklch(63.6% 0.132 266.1)
-
Step 600
600
#4B6EC7
oklch(55.7% 0.144 265.8)
-
Step 700
700
#3D5BAC
oklch(49.1% 0.134 266.3)
-
Step 800
800
#324B8B
oklch(42.7% 0.11 265.9)
-
Step 900
900
#2C3F6F
oklch(37.7% 0.086 266.1)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#6587DB 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) | #658FDE | 0.021 |
| Deuteranopia (no green cones) | #5785D9 | 0.017 |
| Tritanopia (no blue cones) | #2599A6 | 0.119 |
| Achromatopsia (no color) | #898989 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6587DB
#6587DB
oklch(63.6% 0.132 266.1)
- #AE8400
#AE8400
oklch(63.6% 0.13 86)
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 #6587DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.022
- Dark Sky Blue #448EE4 ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.041
- Chefchaouen Blue #4895EF ΔE 0.046
- Faded Blue #658CBB ΔE 0.054
- Cornflower #6A79F7 ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.061
- Cool Blue #4984B8 ΔE 0.063
Use #6587DB 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.