#488DDB
Closest named color: Dark Sky Blue (#448EE4). oklch(63.5% 0.137 253.2), rgb(72, 141, 219).
Aa
Black text reads best on this color (6.10:1).
About this color
#488DDB is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.137 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.013 away. Black text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.10:1 |
| White text | 3.43:1 |
Values
| HEX | #488DDB |
| RGB | rgb(72, 141, 219) |
| HSL | hsl(212, 67%, 57%) |
| OKLCH | oklch(63.5% 0.137 253.2) |
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 #488DDB | 3.43:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #488DDB | 6.10:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #488DDB text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #488DDB text on black | 6.10:1 | AA | Lc -40.1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A3C4EC
oklch(81% 0.067 253.5)
-
Step 400
400
#6FA4E2
oklch(70.7% 0.107 253.1)
-
Step 500
500 (this color)
#488DDB
oklch(63.5% 0.137 253.2)
-
Step 600
600
#2574C7
oklch(55.5% 0.149 253.2)
-
Step 700
700
#1761AC
oklch(49.1% 0.138 253.2)
-
Step 800
800
#16508B
oklch(42.8% 0.114 252.7)
-
Step 900
900
#1A436F
oklch(37.8% 0.088 252.6)
-
Step 950
950
#102741
oklch(26.9% 0.057 253.1)
#488DDB 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) | #6A92DE | 0.039 |
| Deuteranopia (no green cones) | #5584D9 | 0.025 |
| Tritanopia (no blue cones) | #009FAA | 0.107 |
| Achromatopsia (no color) | #8A8A8A | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #488DDB
#488DDB
oklch(63.5% 0.137 253.2)
- #BB7B00
#BB7B00
oklch(63.4% 0.135 72.9)
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 #488DDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.013
- Chefchaouen Blue #4895EF ΔE 0.034
- Soft Blue #6488EA ΔE 0.039
- Water Blue #0E87CC ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.045
- Faded Blue #658CBB ΔE 0.054
- Cool Blue #4984B8 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.056
Use #488DDB 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.