#587EBD
Closest named color: Cool Blue (#4984B8). oklch(59.3% 0.106 260.1), rgb(88, 126, 189).
Aa
Black text reads best on this color (5.13:1).
About this color
#587EBD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.024 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #587EBD |
| RGB | rgb(88, 126, 189) |
| HSL | hsl(217, 43%, 54%) |
| OKLCH | oklch(59.3% 0.106 260.1) |
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 #587EBD | 4.09:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #587EBD | 5.13:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #587EBD text on white | 4.09:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #587EBD text on black | 5.13:1 | AA | Lc -33.7 | 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 600.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#CFDAEB
oklch(88.5% 0.026 259)
-
Step 300
300
#AFC2E0
oklch(80.9% 0.047 259.5)
-
Step 400
400
#85A2D1
oklch(70.8% 0.076 259.9)
-
Step 500
500
#668AC5
oklch(63.1% 0.098 260)
-
Step 600
600 (this color)
#587EBD
oklch(59.3% 0.106 260.1)
-
Step 700
700
#3F6098
oklch(49.1% 0.098 260.4)
-
Step 800
800
#344F7C
oklch(42.8% 0.082 260.2)
-
Step 900
900
#2D4263
oklch(37.7% 0.063 259.2)
-
Step 950
950
#1B273A
oklch(27.1% 0.039 259.4)
#587EBD 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) | #6583C0 | 0.022 |
| Deuteranopia (no green cones) | #5979BC | 0.014 |
| Tritanopia (no blue cones) | #218C95 | 0.095 |
| Achromatopsia (no color) | #7D7D7D | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587EBD
#587EBD
oklch(59.3% 0.106 260.1)
- #9F7627
#9F7627
oklch(59.2% 0.106 80)
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 #587EBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.024
- Steel Blue #4682B4 ΔE 0.027
- Off Blue #5684AE ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.038
- Windows Blue #3778BF ΔE 0.039
- Faded Blue #658CBB ΔE 0.045
- Water Blue #0E87CC ΔE 0.051
- Stormy Blue #507B9C ΔE 0.053
Use #587EBD 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.