#3671A0
Closest named color: Muted Blue (#3B719F). oklch(53.1% 0.096 245.1), rgb(54, 113, 160).
Aa
White text reads best on this color (5.21:1).
About this color
#3671A0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.096 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.005 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #3671A0 |
| RGB | rgb(54, 113, 160) |
| HSL | hsl(207, 50%, 42%) |
| OKLCH | oklch(53.1% 0.096 245.1) |
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 #3671A0 | 5.21:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #3671A0 | 4.02:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #3671A0 text on white | 5.21:1 | AA | Lc 75.6 | Fine for body text |
| #3671A0 text on black | 4.02:1 | AA large text | Lc -26.1 | Dividers and decoration only |
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
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#AAC4DB
oklch(80.8% 0.043 245.1)
-
Step 400
400
#7CA6CA
oklch(70.8% 0.07 244.9)
-
Step 500
500
#598FBC
oklch(63.1% 0.089 245)
-
Step 600
600 (this color)
#3671A0
oklch(53.1% 0.096 245.1)
-
Step 700
700
#2F6590
oklch(49% 0.09 245.2)
-
Step 800
800
#285375
oklch(42.8% 0.074 244.7)
-
Step 900
900
#25455E
oklch(37.8% 0.057 243.7)
-
Step 950
950
#162837
oklch(26.9% 0.037 244.9)
#3671A0 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) | #5C72A2 | 0.042 |
| Deuteranopia (no green cones) | #4E689F | 0.033 |
| Tritanopia (no blue cones) | #007C81 | 0.072 |
| Achromatopsia (no color) | #6C6C6C | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3671A0
#3671A0
oklch(53.1% 0.096 245.1)
- #925F28
#925F28
oklch(53% 0.096 64.8)
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 #3671A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.005
- Flat Blue #3C73A8 ΔE 0.015
- Dull Blue #49759C ΔE 0.024
- Ocean Blue #03719C ΔE 0.026
- French Blue #436BAD ΔE 0.032
- Sea Blue #047495 ΔE 0.033
- Nice Blue #107AB0 ΔE 0.034
- Cerulean #457B9D ΔE 0.036
Use #3671A0 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.