#588AE3
Closest named color: Soft Blue (#6488EA). oklch(64% 0.145 261.1), rgb(88, 138, 227).
Aa
Black text reads best on this color (6.15:1).
About this color
#588AE3 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.145 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.018 away. Black text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.15:1 |
| White text | 3.40:1 |
Values
| HEX | #588AE3 |
| RGB | rgb(88, 138, 227) |
| HSL | hsl(218, 71%, 62%) |
| OKLCH | oklch(64% 0.145 261.1) |
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 #588AE3 | 3.40:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #588AE3 | 6.15:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #588AE3 text on white | 3.40:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #588AE3 text on black | 6.15:1 | AA | Lc -40.3 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A7C2EF
oklch(81% 0.07 260.6)
-
Step 400
400
#78A1E7
oklch(70.8% 0.113 260.7)
-
Step 500
500 (this color)
#588AE3
oklch(64% 0.145 261.1)
-
Step 600
600
#3B6FCE
oklch(55.6% 0.157 261.3)
-
Step 700
700
#2D5CB2
oklch(49% 0.146 261.3)
-
Step 800
800
#264C90
oklch(42.7% 0.121 261)
-
Step 900
900
#234073
oklch(37.7% 0.094 260.8)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#588AE3 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) | #6392E7 | 0.026 |
| Deuteranopia (no green cones) | #5085E1 | 0.017 |
| Tritanopia (no blue cones) | #009EAB | 0.123 |
| Achromatopsia (no color) | #8B8B8B | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588AE3
#588AE3
oklch(64% 0.145 261.1)
- #B48200
#B48200
oklch(63.9% 0.132 81.4)
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 #588AE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.018
- Dark Sky Blue #448EE4 ΔE 0.019
- Chefchaouen Blue #4895EF ΔE 0.032
- Cornflower Blue #6495ED ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.052
- Cornflower #6A79F7 ΔE 0.058
- Water Blue #0E87CC ΔE 0.061
- Faded Blue #658CBB ΔE 0.063
Use #588AE3 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.