#588FFC
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.5% 0.172 262.5), rgb(88, 143, 252).
Aa
Black text reads best on this color (6.74:1).
About this color
#588FFC is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.172 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.030 away. Black text reads best on it, at 6.74:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.74:1 |
| White text | 3.11:1 |
Values
| HEX | #588FFC |
| RGB | rgb(88, 143, 252) |
| HSL | hsl(220, 96%, 67%) |
| OKLCH | oklch(66.5% 0.172 262.5) |
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 #588FFC | 3.11:1 | AA large text | Lc -63.2 | Content text, not long reading |
| Black text on #588FFC | 6.74:1 | AA | Lc 46.2 | Large or bold text, headings |
| #588FFC text on white | 3.11:1 | AA large text | Lc 57.8 | Large or bold text, headings |
| #588FFC text on black | 6.74:1 | AA | Lc -43.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A4C1F8
oklch(80.9% 0.084 263)
-
Step 400
400
#729FF4
oklch(70.7% 0.134 262.3)
-
Step 500
500 (this color)
#588FFC
oklch(66.5% 0.172 262.5)
-
Step 600
600
#326BDF
oklch(55.6% 0.187 262.4)
-
Step 700
700
#2658C1
oklch(49% 0.174 262.6)
-
Step 800
800
#20499C
oklch(42.7% 0.143 262.3)
-
Step 900
900
#1F3E7C
oklch(37.7% 0.112 262.4)
-
Step 950
950
#132549
oklch(27.1% 0.071 262.6)
#588FFC 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) | #5B9AFF | 0.029 |
| Deuteranopia (no green cones) | #3F8BFA | 0.025 |
| Tritanopia (no blue cones) | #00A8B9 | 0.142 |
| Achromatopsia (no color) | #929292 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588FFC
#588FFC
oklch(66.5% 0.172 262.5)
- #BD8A00
#BD8A00
oklch(66.5% 0.137 82.3)
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 #588FFC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.030
- Soft Blue #6488EA ΔE 0.030
- Cornflower Blue #6495ED ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.041
- Cornflower #6A79F7 ΔE 0.055
- Lavender Blue #8B88F8 ΔE 0.060
- Periwinkle #8E82FE ΔE 0.069
Use #588FFC 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.