#4E83B3
Closest named color: Cool Blue (#4984B8). oklch(59.4% 0.093 247.4), rgb(78, 131, 179).
Aa
Black text reads best on this color (5.22:1).
About this color
#4E83B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.093 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.008 away. Black text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.22:1 |
| White text | 4.02:1 |
Values
| HEX | #4E83B3 |
| RGB | rgb(78, 131, 179) |
| HSL | hsl(209, 40%, 50%) |
| OKLCH | oklch(59.4% 0.093 247.4) |
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 #4E83B3 | 4.02:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #4E83B3 | 5.22:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #4E83B3 text on white | 4.02:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #4E83B3 text on black | 5.22:1 | AA | Lc -34.3 | 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
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#AAC4DD
oklch(80.9% 0.045 247.3)
-
Step 400
400
#7CA5CC
oklch(70.7% 0.073 247.6)
-
Step 500
500 (this color)
#4E83B3
oklch(59.4% 0.093 247.4)
-
Step 600
600
#3D78AB
oklch(55.6% 0.101 246.9)
-
Step 700
700
#2F6593
oklch(49.2% 0.094 246.9)
-
Step 800
800
#285277
oklch(42.6% 0.078 247.4)
-
Step 900
900
#254460
oklch(37.6% 0.061 247.4)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#4E83B3 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) | #6F84B5 | 0.039 |
| Deuteranopia (no green cones) | #617AB2 | 0.030 |
| Tritanopia (no blue cones) | #008E94 | 0.078 |
| Achromatopsia (no color) | #7F7F7F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E83B3
#4E83B3
oklch(59.4% 0.093 247.4)
- #A3733D
#A3733D
oklch(59.3% 0.093 67.5)
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 #4E83B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.008
- Steel Blue #4682B4 ΔE 0.009
- Off Blue #5684AE ΔE 0.012
- Dusty Blue #5A86AD ΔE 0.019
- Stormy Blue #507B9C ΔE 0.037
- Faded Blue #658CBB ΔE 0.039
- Blue NCS #118AB2 ΔE 0.039
- Cerulean #457B9D ΔE 0.039
Use #4E83B3 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.