#4D81AB
Closest named color: Off Blue (#5684AE). oklch(58.5% 0.086 244.4), rgb(77, 129, 171).
Aa
Black text reads best on this color (5.04:1).
About this color
#4D81AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.086 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.014 away. Black text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #4D81AB |
| RGB | rgb(77, 129, 171) |
| HSL | hsl(207, 38%, 49%) |
| OKLCH | oklch(58.5% 0.086 244.4) |
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 #4D81AB | 4.16:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #4D81AB | 5.04:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #4D81AB text on white | 4.16:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #4D81AB text on black | 5.04:1 | AA | Lc -33.1 | 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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ACC4D8
oklch(80.9% 0.039 243.3)
-
Step 400
400
#80A5C5
oklch(70.6% 0.062 244.9)
-
Step 500
500
#5F8FB6
oklch(63.1% 0.079 244)
-
Step 600
600 (this color)
#4D81AB
oklch(58.5% 0.086 244.4)
-
Step 700
700
#36658B
oklch(49.1% 0.08 244.9)
-
Step 800
800
#2D5371
oklch(42.8% 0.066 244.1)
-
Step 900
900
#29455B
oklch(37.8% 0.051 243.4)
-
Step 950
950
#182835
oklch(26.9% 0.033 243.9)
#4D81AB 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) | #6F82AD | 0.041 |
| Deuteranopia (no green cones) | #6278AA | 0.032 |
| Tritanopia (no blue cones) | #0C8B8F | 0.072 |
| Achromatopsia (no color) | #7C7C7C | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D81AB
#4D81AB
oklch(58.5% 0.086 244.4)
- #9F7043
#9F7043
oklch(58.4% 0.085 63.6)
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 #4D81AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.014
- Steel Blue #4682B4 ΔE 0.014
- Cool Blue #4984B8 ΔE 0.020
- Dusty Blue #5A86AD ΔE 0.021
- Stormy Blue #507B9C ΔE 0.025
- Cerulean #457B9D ΔE 0.027
- Dull Blue #49759C ΔE 0.038
- Blue NCS #118AB2 ΔE 0.039
Use #4D81AB 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.