#366E97
Closest named color: Muted Blue (#3B719F). oklch(51.9% 0.088 242.8), rgb(54, 110, 151).
Aa
White text reads best on this color (5.47:1).
About this color
#366E97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.088 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.015 away. White text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.83:1 |
| White text | 5.47:1 |
Values
| HEX | #366E97 |
| RGB | rgb(54, 110, 151) |
| HSL | hsl(205, 47%, 40%) |
| OKLCH | oklch(51.9% 0.088 242.8) |
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 #366E97 | 5.47:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #366E97 | 3.83:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #366E97 text on white | 5.47:1 | AA | Lc 77.1 | Fine for body text |
| #366E97 text on black | 3.83:1 | AA large text | Lc -24.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#AAC5DA
oklch(81% 0.042 241.5)
-
Step 400
400
#7BA6C8
oklch(70.7% 0.068 242.7)
-
Step 500
500
#5890BA
oklch(63.2% 0.087 242.3)
-
Step 600
600
#3C79A6
oklch(55.5% 0.095 243)
-
Step 700
700 (this color)
#366E97
oklch(51.9% 0.088 242.8)
-
Step 800
800
#275374
oklch(42.7% 0.073 243.4)
-
Step 900
900
#25455D
oklch(37.7% 0.056 242.6)
-
Step 950
950
#162837
oklch(26.9% 0.037 244.9)
#366E97 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) | #5C6F99 | 0.043 |
| Deuteranopia (no green cones) | #4F6596 | 0.034 |
| Tritanopia (no blue cones) | #00787C | 0.066 |
| Achromatopsia (no color) | #696969 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366E97
#366E97
oklch(51.9% 0.088 242.8)
- #8C5C2E
#8C5C2E
oklch(51.8% 0.088 62.5)
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 #366E97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.015
- Ocean Blue #03719C ΔE 0.025
- Sea Blue #047495 ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.029
- Dull Blue #49759C ΔE 0.030
- Denim #3B638C ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Peacock Blue #016795 ΔE 0.038
Use #366E97 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.