#3182BD
Closest named color: Steel Blue (#4682B4). oklch(58.5% 0.119 244.2), rgb(49, 130, 189).
Aa
Black text reads best on this color (5.05:1).
About this color
#3182BD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.119 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.020 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #3182BD |
| RGB | rgb(49, 130, 189) |
| HSL | hsl(205, 59%, 47%) |
| OKLCH | oklch(58.5% 0.119 244.2) |
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 #3182BD | 4.15:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #3182BD | 5.05:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #3182BD text on white | 4.15:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #3182BD text on black | 5.05:1 | 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
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A4C5E1
oklch(80.9% 0.053 244.1)
-
Step 400
400
#71A7D3
oklch(70.8% 0.086 244)
-
Step 500
500
#4990C7
oklch(63.1% 0.11 244.2)
-
Step 600
600 (this color)
#3182BD
oklch(58.5% 0.119 244.2)
-
Step 700
700
#18669B
oklch(49.2% 0.111 244.3)
-
Step 800
800
#17537D
oklch(42.6% 0.092 244.1)
-
Step 900
900
#1B4565
oklch(37.7% 0.072 244.5)
-
Step 950
950
#11293B
oklch(27.1% 0.045 243.2)
#3182BD 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) | #6784C0 | 0.053 |
| Deuteranopia (no green cones) | #5377BC | 0.039 |
| Tritanopia (no blue cones) | #009097 | 0.084 |
| Achromatopsia (no color) | #7C7C7C | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3182BD
#3182BD
oklch(58.5% 0.119 244.2)
- #AC6A1F
#AC6A1F
oklch(58.4% 0.12 63.9)
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 #3182BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.020
- Cool Blue #4984B8 ΔE 0.022
- Water Blue #0E87CC ΔE 0.026
- Windows Blue #3778BF ΔE 0.029
- Blue NCS #118AB2 ΔE 0.034
- Nice Blue #107AB0 ΔE 0.035
- Off Blue #5684AE ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.046
Use #3182BD 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.