#4181BA
Closest named color: Steel Blue (#4682B4). oklch(58.7% 0.11 247.7), rgb(65, 129, 186).
Aa
Black text reads best on this color (5.07:1).
About this color
#4181BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.110 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.011 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #4181BA |
| RGB | rgb(65, 129, 186) |
| HSL | hsl(208, 48%, 49%) |
| OKLCH | oklch(58.7% 0.11 247.7) |
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 #4181BA | 4.13:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #4181BA | 5.07:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #4181BA text on white | 4.13:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #4181BA text on black | 5.07:1 | AA | Lc -33.4 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CBDBEB
oklch(88.4% 0.028 248.1)
-
Step 300
300
#A8C4E0
oklch(80.9% 0.05 248.4)
-
Step 400
400
#79A5D0
oklch(70.6% 0.079 248.4)
-
Step 500
500
#558EC4
oklch(63% 0.102 248.5)
-
Step 600
600 (this color)
#4181BA
oklch(58.7% 0.11 247.7)
-
Step 700
700
#296497
oklch(48.9% 0.102 247.8)
-
Step 800
800
#24527B
oklch(42.7% 0.085 248.1)
-
Step 900
900
#224463
oklch(37.6% 0.067 248)
-
Step 950
950
#15283A
oklch(27% 0.042 248.4)
#4181BA 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) | #6883BC | 0.043 |
| Deuteranopia (no green cones) | #5777B9 | 0.033 |
| Tritanopia (no blue cones) | #008F95 | 0.086 |
| Achromatopsia (no color) | #7D7D7D | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4181BA
#4181BA
oklch(58.7% 0.11 247.7)
- #A76E29
#A76E29
oklch(58.6% 0.11 67.3)
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 #4181BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.011
- Cool Blue #4984B8 ΔE 0.013
- Off Blue #5684AE ΔE 0.030
- Windows Blue #3778BF ΔE 0.031
- Water Blue #0E87CC ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.037
- Blue NCS #118AB2 ΔE 0.039
- Nice Blue #107AB0 ΔE 0.040
Use #4181BA 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.