#367EBC
Closest named color: Windows Blue (#3778BF). oklch(57.7% 0.12 247.7), rgb(54, 126, 188).
Aa
Black text reads best on this color (4.86:1).
About this color
#367EBC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.120 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.019 away. Black text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #367EBC |
| RGB | rgb(54, 126, 188) |
| HSL | hsl(208, 55%, 47%) |
| OKLCH | oklch(57.7% 0.12 247.7) |
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 #367EBC | 4.31:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #367EBC | 4.86:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #367EBC text on white | 4.31:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #367EBC text on black | 4.86:1 | AA | Lc -32.1 | 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
#CADBEC
oklch(88.4% 0.03 248.2)
-
Step 300
300
#A6C4E2
oklch(80.8% 0.054 248.5)
-
Step 400
400
#75A6D4
oklch(70.8% 0.086 247.6)
-
Step 500
500
#4E8FC9
oklch(63.2% 0.11 247.4)
-
Step 600
600 (this color)
#367EBC
oklch(57.7% 0.12 247.7)
-
Step 700
700
#21649C
oklch(49% 0.112 248)
-
Step 800
800
#1E527F
oklch(42.7% 0.093 248.2)
-
Step 900
900
#1F4466
oklch(37.7% 0.072 248.5)
-
Step 950
950
#13283B
oklch(26.9% 0.045 247.5)
#367EBC 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) | #6281BF | 0.046 |
| Deuteranopia (no green cones) | #4F74BB | 0.033 |
| Tritanopia (no blue cones) | #008D94 | 0.089 |
| Achromatopsia (no color) | #7A7A7A | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #367EBC
#367EBC
oklch(57.7% 0.12 247.7)
- #A76A16
#A76A16
oklch(57.7% 0.119 68)
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 #367EBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.019
- Steel Blue #4682B4 ΔE 0.023
- Cool Blue #4984B8 ΔE 0.027
- Nice Blue #107AB0 ΔE 0.031
- Water Blue #0E87CC ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.039
- Off Blue #5684AE ΔE 0.043
- Blue NCS #118AB2 ΔE 0.043
Use #367EBC 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.