#587EC1
Closest named color: Cool Blue (#4984B8). oklch(59.5% 0.112 261.1), rgb(88, 126, 193).
Aa
Black text reads best on this color (5.16:1).
About this color
#587EC1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.112 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.028 away. Black text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #587EC1 |
| RGB | rgb(88, 126, 193) |
| HSL | hsl(218, 46%, 55%) |
| OKLCH | oklch(59.5% 0.112 261.1) |
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 #587EC1 | 4.06:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #587EC1 | 5.16:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #587EC1 text on white | 4.06:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #587EC1 text on black | 5.16:1 | AA | Lc -34.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC2E5
oklch(81% 0.055 260.6)
-
Step 400
400
#82A1D8
oklch(70.7% 0.088 261.6)
-
Step 500
500 (this color)
#587EC1
oklch(59.5% 0.112 261.1)
-
Step 600
600
#4972BA
oklch(55.6% 0.122 260.9)
-
Step 700
700
#3B5FA0
oklch(49.1% 0.113 261.3)
-
Step 800
800
#314E82
oklch(42.8% 0.093 261.3)
-
Step 900
900
#2B4168
oklch(37.7% 0.073 261.2)
-
Step 950
950
#19263D
oklch(26.9% 0.047 261.3)
#587EC1 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) | #6383C4 | 0.020 |
| Deuteranopia (no green cones) | #567AC0 | 0.012 |
| Tritanopia (no blue cones) | #1B8D96 | 0.101 |
| Achromatopsia (no color) | #7E7E7E | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #587EC1
#587EC1
oklch(59.5% 0.112 261.1)
- #A0771F
#A0771F
oklch(59.5% 0.112 81.6)
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 #587EC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.028
- Steel Blue #4682B4 ΔE 0.032
- Off Blue #5684AE ΔE 0.038
- Windows Blue #3778BF ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.043
- Faded Blue #658CBB ΔE 0.047
- Water Blue #0E87CC ΔE 0.050
- Flat Blue #3C73A8 ΔE 0.058
Use #587EC1 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.