#478EC0
Closest named color: Cool Blue (#4984B8). oklch(62.2% 0.104 241.8), rgb(71, 142, 192).
Aa
Black text reads best on this color (5.89:1).
About this color
#478EC0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.104 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.028 away. Black text reads best on it, at 5.89:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.89:1 |
| White text | 3.56:1 |
Values
| HEX | #478EC0 |
| RGB | rgb(71, 142, 192) |
| HSL | hsl(205, 49%, 52%) |
| OKLCH | oklch(62.2% 0.104 241.8) |
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 #478EC0 | 3.56:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #478EC0 | 5.89:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #478EC0 text on white | 3.56:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #478EC0 text on black | 5.89:1 | AA | Lc -38.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEB
oklch(88.6% 0.028 243.1)
-
Step 300
300
#A4C5DF
oklch(80.8% 0.051 242)
-
Step 400
400
#72A7CF
oklch(70.7% 0.081 241.9)
-
Step 500
500 (this color)
#478EC0
oklch(62.2% 0.104 241.8)
-
Step 600
600
#287AAF
oklch(55.6% 0.113 241.8)
-
Step 700
700
#196797
oklch(49.2% 0.105 241.6)
-
Step 800
800
#18547A
oklch(42.7% 0.087 241.4)
-
Step 900
900
#1C4662
oklch(37.8% 0.067 240.9)
-
Step 950
950
#11293A
oklch(27% 0.044 241.7)
#478EC0 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) | #788EC2 | 0.053 |
| Deuteranopia (no green cones) | #6782BF | 0.043 |
| Tritanopia (no blue cones) | #009A9F | 0.077 |
| Achromatopsia (no color) | #888888 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478EC0
#478EC0
oklch(62.2% 0.104 241.8)
- #B47840
#B47840
oklch(62.4% 0.104 61.9)
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 #478EC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.028
- Faded Blue #658CBB ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.034
- Off Blue #5684AE ΔE 0.034
- Steel Blue #4682B4 ΔE 0.035
- Blue NCS #118AB2 ΔE 0.040
- Water Blue #0E87CC ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.055
Use #478EC0 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.