#587DDD
Closest named color: Soft Blue (#6488EA). oklch(60.9% 0.152 266.2), rgb(88, 125, 221).
Aa
Black text reads best on this color (5.39:1).
About this color
#587DDD is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.152 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.037 away. Black text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.39:1 |
| White text | 3.89:1 |
Values
| HEX | #587DDD |
| RGB | rgb(88, 125, 221) |
| HSL | hsl(223, 66%, 61%) |
| OKLCH | oklch(60.9% 0.152 266.2) |
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 #587DDD | 3.89:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #587DDD | 5.39:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #587DDD text on white | 3.89:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #587DDD text on black | 5.39:1 | AA | Lc -35.5 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#AAC0F1
oklch(80.8% 0.074 265.9)
-
Step 400
400
#7E9EEB
oklch(70.7% 0.119 266.2)
-
Step 500
500 (this color)
#587DDD
oklch(60.9% 0.152 266.2)
-
Step 600
600
#466BD3
oklch(55.6% 0.166 266.4)
-
Step 700
700
#3859B6
oklch(49.1% 0.152 266.2)
-
Step 800
800
#2E4994
oklch(42.7% 0.128 266.2)
-
Step 900
900
#293E76
oklch(37.8% 0.099 266.3)
-
Step 950
950
#182545
oklch(27.1% 0.062 265.8)
#587DDD 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) | #5187E1 | 0.026 |
| Deuteranopia (no green cones) | #3E7BDB | 0.027 |
| Tritanopia (no blue cones) | #0093A2 | 0.132 |
| Achromatopsia (no color) | #818181 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587DDD
#587DDD
oklch(60.9% 0.152 266.2)
- #A47C00
#A47C00
oklch(60.9% 0.125 85.8)
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 #587DDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.045
- Cornflower #6A79F7 ΔE 0.047
- Windows Blue #3778BF ΔE 0.059
- Water Blue #0E87CC ΔE 0.061
- Royal Blue #4169E1 ΔE 0.061
- Clear Blue #247AFD ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.063
Use #587DDD 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.