#3D7BB0
Closest named color: Steel Blue (#4682B4). oklch(56.6% 0.104 246.8), rgb(61, 123, 176).
Aa
Black text reads best on this color (4.65:1).
About this color
#3D7BB0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.104 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.023 away. Black text reads best on it, at 4.65:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.65:1 |
| White text | 4.50:1 |
Values
| HEX | #3D7BB0 |
| RGB | rgb(61, 123, 176) |
| HSL | hsl(208, 49%, 46%) |
| OKLCH | oklch(56.6% 0.104 246.8) |
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 #3D7BB0 | 4.50:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #3D7BB0 | 4.65:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #3D7BB0 text on white | 4.50:1 | AA | Lc 71.1 | Content text, not long reading |
| #3D7BB0 text on black | 4.65:1 | AA | Lc -30.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DE
oklch(80.9% 0.047 247.4)
-
Step 400
400
#7AA5CD
oklch(70.6% 0.075 247.1)
-
Step 500
500
#578FC0
oklch(63.2% 0.095 246.4)
-
Step 600
600 (this color)
#3D7BB0
oklch(56.6% 0.104 246.8)
-
Step 700
700
#2C6595
oklch(49.2% 0.098 246.9)
-
Step 800
800
#265278
oklch(42.6% 0.08 247.1)
-
Step 900
900
#244461
oklch(37.6% 0.063 247.6)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#3D7BB0 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) | #647DB2 | 0.043 |
| Deuteranopia (no green cones) | #5472AF | 0.032 |
| Tritanopia (no blue cones) | #00888E | 0.080 |
| Achromatopsia (no color) | #777777 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D7BB0
#3D7BB0
oklch(56.6% 0.104 246.8)
- #9F6929
#9F6929
oklch(56.7% 0.105 67)
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 #3D7BB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.023
- Flat Blue #3C73A8 ΔE 0.024
- Nice Blue #107AB0 ΔE 0.026
- Windows Blue #3778BF ΔE 0.027
- Cerulean #457B9D ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Dull Blue #49759C ΔE 0.032
- Stormy Blue #507B9C ΔE 0.035
Use #3D7BB0 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.