#3667BA
Closest named color: Mid Blue (#276AB3). oklch(52.3% 0.141 260.3), rgb(54, 103, 186).
Aa
White text reads best on this color (5.51:1).
About this color
#3667BA is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.141 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.019 away. White text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #3667BA |
| RGB | rgb(54, 103, 186) |
| HSL | hsl(218, 55%, 47%) |
| OKLCH | oklch(52.3% 0.141 260.3) |
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 #3667BA | 5.51:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #3667BA | 3.80:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #3667BA text on white | 5.51:1 | AA | Lc 77.2 | Fine for body text |
| #3667BA text on black | 3.80:1 | AA large text | Lc -24.5 | 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 700.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2ED
oklch(80.9% 0.068 259.6)
-
Step 400
400
#78A1E5
oklch(70.7% 0.11 260.2)
-
Step 500
500
#5688DD
oklch(63.1% 0.14 260.4)
-
Step 600
600
#3B70CB
oklch(55.6% 0.152 260.4)
-
Step 700
700 (this color)
#3667BA
oklch(52.3% 0.141 260.3)
-
Step 800
800
#264D8E
oklch(42.8% 0.117 260)
-
Step 900
900
#234071
oklch(37.6% 0.091 260.3)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#3667BA 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) | #3E6FBD | 0.024 |
| Deuteranopia (no green cones) | #2563B8 | 0.019 |
| Tritanopia (no blue cones) | #007A87 | 0.112 |
| Achromatopsia (no color) | #696969 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3667BA
#3667BA
oklch(52.3% 0.141 260.3)
- #8A6200
#8A6200
oklch(52.4% 0.108 80.6)
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 #3667BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.019
- French Blue #436BAD ΔE 0.028
- Windows Blue #3778BF ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.049
- Muted Blue #3B719F ΔE 0.057
- Nice Blue #107AB0 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.061
- Royal Blue #4169E1 ΔE 0.062
Use #3667BA 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.