#588EC0
Closest named color: Faded Blue (#658CBB). oklch(63% 0.095 247.8), rgb(88, 142, 192).
Aa
Black text reads best on this color (6.04:1).
About this color
#588EC0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.095 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.015 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #588EC0 |
| RGB | rgb(88, 142, 192) |
| HSL | hsl(209, 45%, 55%) |
| OKLCH | oklch(63% 0.095 247.8) |
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 #588EC0 | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #588EC0 | 6.04:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #588EC0 text on white | 3.47:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #588EC0 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#AAC4DE
oklch(80.9% 0.046 248.4)
-
Step 400
400
#7BA5CD
oklch(70.6% 0.075 247.7)
-
Step 500
500 (this color)
#588EC0
oklch(63% 0.095 247.8)
-
Step 600
600
#3C78AD
oklch(55.7% 0.104 247.5)
-
Step 700
700
#2E6494
oklch(49% 0.096 248)
-
Step 800
800
#275278
oklch(42.6% 0.08 247.6)
-
Step 900
900
#254461
oklch(37.7% 0.062 248.3)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#588EC0 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) | #798FC2 | 0.039 |
| Deuteranopia (no green cones) | #6B85BF | 0.030 |
| Tritanopia (no blue cones) | #159A9F | 0.082 |
| Achromatopsia (no color) | #8A8A8A | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588EC0
#588EC0
oklch(63% 0.095 247.8)
- #AF7E46
#AF7E46
oklch(63% 0.095 68.3)
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 #588EC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.015
- Dusty Blue #5A86AD ΔE 0.032
- Cool Blue #4984B8 ΔE 0.035
- Off Blue #5684AE ΔE 0.035
- Steel Blue #4682B4 ΔE 0.042
- Silver Lake Blue #778DA9 ΔE 0.047
- Blue Grey #758DA3 ΔE 0.052
- Blue NCS #118AB2 ΔE 0.054
Use #588EC0 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.