#478CB5
Closest named color: Dusty Blue (#5A86AD). oklch(61.2% 0.093 237.1), rgb(71, 140, 181).
Aa
Black text reads best on this color (5.68:1).
About this color
#478CB5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.093 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.023 away. Black text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #478CB5 |
| RGB | rgb(71, 140, 181) |
| HSL | hsl(202, 44%, 49%) |
| OKLCH | oklch(61.2% 0.093 237.1) |
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 #478CB5 | 3.69:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #478CB5 | 5.68:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #478CB5 text on white | 3.69:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #478CB5 text on black | 5.68:1 | AA | Lc -37.4 | 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
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A6C6DB
oklch(81% 0.045 236.9)
-
Step 400
400
#74A8C9
oklch(70.7% 0.073 237)
-
Step 500
500 (this color)
#478CB5
oklch(61.2% 0.093 237.1)
-
Step 600
600
#2C7BA7
oklch(55.5% 0.102 237.3)
-
Step 700
700
#1D688F
oklch(49.1% 0.094 236.6)
-
Step 800
800
#1B5574
oklch(42.7% 0.078 236.4)
-
Step 900
900
#1D465E
oklch(37.6% 0.061 237.2)
-
Step 950
950
#122937
oklch(26.9% 0.039 237.4)
#478CB5 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) | #798BB7 | 0.055 |
| Deuteranopia (no green cones) | #6A80B4 | 0.047 |
| Tritanopia (no blue cones) | #00979A | 0.068 |
| Achromatopsia (no color) | #858585 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478CB5
#478CB5
oklch(61.2% 0.093 237.1)
- #AE7549
#AE7549
oklch(61.2% 0.093 57.5)
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 #478CB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.023
- Off Blue #5684AE ΔE 0.024
- Cool Blue #4984B8 ΔE 0.025
- Steel Blue #4682B4 ΔE 0.029
- Blue NCS #118AB2 ΔE 0.032
- Faded Blue #658CBB ΔE 0.033
- Water Blue #0E87CC ΔE 0.050
- Teal Blue #01889F ΔE 0.052
Use #478CB5 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.