#488DCF
Closest named color: Dark Sky Blue (#448EE4). oklch(62.8% 0.122 249.4), rgb(72, 141, 207).
Aa
Black text reads best on this color (5.98:1).
About this color
#488DCF is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.122 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.031 away. Black text reads best on it, at 5.98:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.98:1 |
| White text | 3.50:1 |
Values
| HEX | #488DCF |
| RGB | rgb(72, 141, 207) |
| HSL | hsl(209, 58%, 55%) |
| OKLCH | oklch(62.8% 0.122 249.4) |
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 #488DCF | 3.50:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #488DCF | 5.98:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #488DCF text on white | 3.50:1 | AA large text | Lc 62.4 | Content text, not long reading |
| #488DCF text on black | 5.98:1 | AA | Lc -39.3 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400
#71A5DA
oklch(70.6% 0.096 249.8)
-
Step 500
500 (this color)
#488DCF
oklch(62.8% 0.122 249.4)
-
Step 600
600
#2777BD
oklch(55.6% 0.133 249.2)
-
Step 700
700
#1963A3
oklch(49% 0.124 249.8)
-
Step 800
800
#185184
oklch(42.6% 0.103 249.7)
-
Step 900
900
#1B446A
oklch(37.7% 0.08 249.3)
-
Step 950
950
#11283E
oklch(27% 0.05 249.3)
#488DCF 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) | #7090D2 | 0.044 |
| Deuteranopia (no green cones) | #5E83CE | 0.032 |
| Tritanopia (no blue cones) | #009DA5 | 0.095 |
| Achromatopsia (no color) | #898989 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #488DCF
#488DCF
oklch(62.8% 0.122 249.4)
- #B77926
#B77926
oklch(62.7% 0.122 69.2)
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 #488DCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.031
- Water Blue #0E87CC ΔE 0.038
- Cool Blue #4984B8 ΔE 0.039
- Faded Blue #658CBB ΔE 0.039
- Steel Blue #4682B4 ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.049
- Off Blue #5684AE ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.052
Use #488DCF 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.