#588AF3
Closest named color: Soft Blue (#6488EA). oklch(64.9% 0.166 263.3), rgb(88, 138, 243).
Aa
Black text reads best on this color (6.34:1).
About this color
#588AF3 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.166 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.017 away. Black text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.34:1 |
| White text | 3.30:1 |
Values
| HEX | #588AF3 |
| RGB | rgb(88, 138, 243) |
| HSL | hsl(221, 87%, 65%) |
| OKLCH | oklch(64.9% 0.166 263.3) |
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 #588AF3 | 3.30:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #588AF3 | 6.34:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #588AF3 text on white | 3.30:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #588AF3 text on black | 6.34:1 | AA | Lc -41.5 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF8
oklch(88.6% 0.045 263.1)
-
Step 300
300
#A5C1F6
oklch(80.9% 0.081 263)
-
Step 400
400
#769FF1
oklch(70.7% 0.129 263.3)
-
Step 500
500 (this color)
#588AF3
oklch(64.9% 0.166 263.3)
-
Step 600
600
#386BDB
oklch(55.6% 0.18 263.3)
-
Step 700
700
#2B59BE
oklch(49.2% 0.167 263.2)
-
Step 800
800
#24499A
oklch(42.7% 0.139 263.3)
-
Step 900
900
#223E7A
oklch(37.7% 0.108 263.3)
-
Step 950
950
#142548
oklch(27.1% 0.069 263.1)
#588AF3 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) | #5995F7 | 0.029 |
| Deuteranopia (no green cones) | #3F87F1 | 0.025 |
| Tritanopia (no blue cones) | #00A2B3 | 0.138 |
| Achromatopsia (no color) | #8D8D8D | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588AF3
#588AF3
oklch(64.9% 0.166 263.3)
- #B68600
#B68600
oklch(65% 0.134 83.1)
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 #588AF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.017
- Chefchaouen Blue #4895EF ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.032
- Cornflower Blue #6495ED ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.040
- Cornflower #6A79F7 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.062
- Clear Blue #247AFD ΔE 0.064
Use #588AF3 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.