#478BB6
Closest named color: Cool Blue (#4984B8). oklch(61% 0.095 238.7), rgb(71, 139, 182).
Aa
Black text reads best on this color (5.63:1).
About this color
#478BB6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.095 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.021 away. Black text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #478BB6 |
| RGB | rgb(71, 139, 182) |
| HSL | hsl(203, 44%, 50%) |
| OKLCH | oklch(61% 0.095 238.7) |
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 #478BB6 | 3.72:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #478BB6 | 5.63:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #478BB6 text on white | 3.72:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #478BB6 text on black | 5.63:1 | AA | Lc -37.0 | 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
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A6C6DC
oklch(81% 0.046 238.2)
-
Step 400
400
#74A8CA
oklch(70.8% 0.074 237.9)
-
Step 500
500 (this color)
#478BB6
oklch(61% 0.095 238.7)
-
Step 600
600
#2D7BA9
oklch(55.6% 0.103 238.7)
-
Step 700
700
#1E6791
oklch(49% 0.097 239)
-
Step 800
800
#1C5476
oklch(42.6% 0.08 239.6)
-
Step 900
900
#1E465F
oklch(37.7% 0.062 238.9)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#478BB6 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) | #778BB8 | 0.053 |
| Deuteranopia (no green cones) | #687FB5 | 0.045 |
| Tritanopia (no blue cones) | #00969A | 0.070 |
| Achromatopsia (no color) | #848484 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478BB6
#478BB6
oklch(61% 0.095 238.7)
- #AE7546
#AE7546
oklch(61.2% 0.095 59.1)
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 #478BB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.022
- Off Blue #5684AE ΔE 0.023
- Steel Blue #4682B4 ΔE 0.026
- Blue NCS #118AB2 ΔE 0.032
- Faded Blue #658CBB ΔE 0.032
- Water Blue #0E87CC ΔE 0.048
- Stormy Blue #507B9C ΔE 0.052
Use #478BB6 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.