#478EBC
Closest named color: Cool Blue (#4984B8). oklch(62% 0.1 239.5), rgb(71, 142, 188).
Aa
Black text reads best on this color (5.86:1).
About this color
#478EBC is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.100 and its hue 240°. 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 5.86:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.86:1 |
| White text | 3.58:1 |
Values
| HEX | #478EBC |
| RGB | rgb(71, 142, 188) |
| HSL | hsl(204, 47%, 51%) |
| OKLCH | oklch(62% 0.1 239.5) |
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 #478EBC | 3.58:1 | AA large text | Lc -68.7 | Content text, not long reading |
| Black text on #478EBC | 5.86:1 | AA | Lc 40.9 | Non-text elements, placeholder text |
| #478EBC text on white | 3.58:1 | AA large text | Lc 63.2 | Content text, not long reading |
| #478EBC text on black | 5.86:1 | AA | Lc -38.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A5C6DD
oklch(81% 0.048 238.6)
-
Step 400
400
#72A8CC
oklch(70.7% 0.078 238.5)
-
Step 500
500 (this color)
#478EBC
oklch(62% 0.1 239.5)
-
Step 600
600
#287BAC
oklch(55.7% 0.109 239.4)
-
Step 700
700
#196794
oklch(49.1% 0.102 239.9)
-
Step 800
800
#195478
oklch(42.6% 0.084 240.2)
-
Step 900
900
#1C4660
oklch(37.7% 0.064 238.9)
-
Step 950
950
#122938
oklch(27% 0.04 239.2)
#478EBC 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) | #798EBE | 0.054 |
| Deuteranopia (no green cones) | #6982BB | 0.045 |
| Tritanopia (no blue cones) | #009A9E | 0.073 |
| Achromatopsia (no color) | #878787 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478EBC
#478EBC
oklch(62% 0.1 239.5)
- #B27745
#B27745
oklch(62% 0.099 59.7)
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 #478EBC, 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 0.030
- Off Blue #5684AE ΔE 0.031
- Steel Blue #4682B4 ΔE 0.034
- Blue NCS #118AB2 ΔE 0.037
- Water Blue #0E87CC ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.056
Use #478EBC 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.