#366B83
Closest named color: Denim (#3B638C). oklch(50.2% 0.068 229.7), rgb(54, 107, 131).
Aa
White text reads best on this color (5.85:1).
About this color
#366B83 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.068 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.032 away. White text reads best on it, at 5.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #366B83 |
| RGB | rgb(54, 107, 131) |
| HSL | hsl(199, 42%, 36%) |
| OKLCH | oklch(50.2% 0.068 229.7) |
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 #366B83 | 5.85:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #366B83 | 3.58:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #366B83 text on white | 5.85:1 | AA | Lc 79.1 | Fine for body text |
| #366B83 text on black | 3.58:1 | AA large text | Lc -22.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ACC5D2
oklch(80.9% 0.033 230.4)
-
Step 400
400
#7FA7BB
oklch(70.6% 0.052 230)
-
Step 500
500
#5D91AA
oklch(63% 0.067 229.9)
-
Step 600
600
#417B96
oklch(55.5% 0.074 230.2)
-
Step 700
700 (this color)
#366B83
oklch(50.2% 0.068 229.7)
-
Step 800
800
#2B5568
oklch(42.8% 0.056 229.4)
-
Step 900
900
#274654
oklch(37.6% 0.044 228.8)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#366B83 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) | #5F6984 | 0.049 |
| Deuteranopia (no green cones) | #546183 | 0.043 |
| Tritanopia (no blue cones) | #007273 | 0.048 |
| Achromatopsia (no color) | #656565 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366B83
#366B83
oklch(50.2% 0.068 229.7)
- #835840
#835840
oklch(50.1% 0.068 49.8)
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 #366B83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.032
- Sea Blue #047495 ΔE 0.037
- Slate #516572 ΔE 0.037
- Metallic Blue #4F738E ΔE 0.041
- Ocean Blue #03719C ΔE 0.043
- Peacock Blue #016795 ΔE 0.044
- Muted Blue #3B719F ΔE 0.046
- Deep Aqua #08787F ΔE 0.046
Use #366B83 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.