#488CD9
Closest named color: Dark Sky Blue (#448EE4). oklch(63.1% 0.136 253.2), rgb(72, 140, 217).
Aa
Black text reads best on this color (6.02:1).
About this color
#488CD9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.136 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.016 away. Black text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.02:1 |
| White text | 3.48:1 |
Values
| HEX | #488CD9 |
| RGB | rgb(72, 140, 217) |
| HSL | hsl(212, 66%, 57%) |
| OKLCH | oklch(63.1% 0.136 253.2) |
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 #488CD9 | 3.48:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #488CD9 | 6.02:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #488CD9 text on white | 3.48:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #488CD9 text on black | 6.02:1 | AA | Lc -39.6 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A3C4EB
oklch(81% 0.066 252.8)
-
Step 400
400
#70A4E1
oklch(70.7% 0.106 253.1)
-
Step 500
500 (this color)
#488CD9
oklch(63.1% 0.136 253.2)
-
Step 600
600
#2774C6
oklch(55.5% 0.147 253.3)
-
Step 700
700
#1861AB
oklch(49% 0.137 253.1)
-
Step 800
800
#18508B
oklch(42.8% 0.113 253.1)
-
Step 900
900
#1B436F
oklch(37.8% 0.088 253)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#488CD9 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) | #6A91DC | 0.039 |
| Deuteranopia (no green cones) | #5583D7 | 0.025 |
| Tritanopia (no blue cones) | #009EA8 | 0.107 |
| Achromatopsia (no color) | #898989 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #488CD9
#488CD9
oklch(63.1% 0.136 253.2)
- #BA7A00
#BA7A00
oklch(63.1% 0.135 72.7)
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 #488CD9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.016
- Chefchaouen Blue #4895EF ΔE 0.037
- Soft Blue #6488EA ΔE 0.041
- Water Blue #0E87CC ΔE 0.042
- Cornflower Blue #6495ED ΔE 0.048
- Cool Blue #4984B8 ΔE 0.051
- Faded Blue #658CBB ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.058
Use #488CD9 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.