#4978A8
Closest named color: Dull Blue (#49759C). oklch(56% 0.091 250.2), rgb(73, 120, 168).
Aa
White text reads best on this color (4.63:1).
About this color
#4978A8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.091 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.019 away. White text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.53:1 |
| White text | 4.63:1 |
Values
| HEX | #4978A8 |
| RGB | rgb(73, 120, 168) |
| HSL | hsl(210, 39%, 47%) |
| OKLCH | oklch(56% 0.091 250.2) |
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 #4978A8 | 4.63:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #4978A8 | 4.53:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #4978A8 text on white | 4.63:1 | AA | Lc 72.0 | Content text, not long reading |
| #4978A8 text on black | 4.53:1 | AA | Lc -29.7 | Dividers and decoration only |
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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#82A4C9
oklch(70.7% 0.066 250.9)
-
Step 500
500
#628DBB
oklch(63.1% 0.084 250.9)
-
Step 600
600 (this color)
#4978A8
oklch(56% 0.091 250.2)
-
Step 700
700
#39648F
oklch(49.2% 0.084 249.9)
-
Step 800
800
#305174
oklch(42.6% 0.07 251.1)
-
Step 900
900
#2A445E
oklch(37.8% 0.055 249.5)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#4978A8 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) | #647AAA | 0.033 |
| Deuteranopia (no green cones) | #5870A7 | 0.026 |
| Tritanopia (no blue cones) | #008389 | 0.078 |
| Achromatopsia (no color) | #757575 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4978A8
#4978A8
oklch(56% 0.091 250.2)
- #966A33
#966A33
oklch(55.9% 0.091 70.1)
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 #4978A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.019
- Flat Blue #3C73A8 ΔE 0.021
- Cerulean #457B9D ΔE 0.022
- Stormy Blue #507B9C ΔE 0.024
- Muted Blue #3B719F ΔE 0.028
- Steel Blue #4682B4 ΔE 0.030
- Nice Blue #107AB0 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.038
Use #4978A8 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.