#4E83B5
Closest named color: Cool Blue (#4984B8). oklch(59.5% 0.096 248.4), rgb(78, 131, 181).
Aa
Black text reads best on this color (5.23:1).
About this color
#4E83B5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.096 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.006 away. Black text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.23:1 |
| White text | 4.00:1 |
Values
| HEX | #4E83B5 |
| RGB | rgb(78, 131, 181) |
| HSL | hsl(209, 41%, 51%) |
| OKLCH | oklch(59.5% 0.096 248.4) |
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 #4E83B5 | 4.00:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #4E83B5 | 5.23:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #4E83B5 text on white | 4.00:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #4E83B5 text on black | 5.23:1 | AA | Lc -34.4 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#AAC4DE
oklch(80.9% 0.046 248.4)
-
Step 400
400
#7CA5CE
oklch(70.7% 0.075 248.9)
-
Step 500
500 (this color)
#4E83B5
oklch(59.5% 0.096 248.4)
-
Step 600
600
#3D77AD
oklch(55.5% 0.104 248.7)
-
Step 700
700
#2F6495
oklch(49.1% 0.097 248.8)
-
Step 800
800
#285279
oklch(42.7% 0.08 248.7)
-
Step 900
900
#254461
oklch(37.7% 0.062 248.3)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#4E83B5 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) | #6E85B7 | 0.038 |
| Deuteranopia (no green cones) | #607AB4 | 0.030 |
| Tritanopia (no blue cones) | #008F94 | 0.082 |
| Achromatopsia (no color) | #7F7F7F | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E83B5
#4E83B5
oklch(59.5% 0.096 248.4)
- #A4733A
#A4733A
oklch(59.4% 0.096 68.2)
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 #4E83B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.006
- Steel Blue #4682B4 ΔE 0.009
- Off Blue #5684AE ΔE 0.014
- Dusty Blue #5A86AD ΔE 0.021
- Faded Blue #658CBB ΔE 0.039
- Stormy Blue #507B9C ΔE 0.040
- Blue NCS #118AB2 ΔE 0.040
- Cerulean #457B9D ΔE 0.042
Use #4E83B5 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.