#3B6C8A
Closest named color: Denim (#3B638C). oklch(51% 0.071 237.3), rgb(59, 108, 138).
Aa
White text reads best on this color (5.67:1).
About this color
#3B6C8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.071 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.028 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #3B6C8A |
| RGB | rgb(59, 108, 138) |
| HSL | hsl(203, 40%, 39%) |
| OKLCH | oklch(51% 0.071 237.3) |
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 #3B6C8A | 5.67:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #3B6C8A | 3.69:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #3B6C8A text on white | 5.67:1 | AA | Lc 78.3 | Fine for body text |
| #3B6C8A text on black | 3.69:1 | AA large text | Lc -23.5 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC4D5
oklch(80.8% 0.035 240)
-
Step 400
400
#80A6BF
oklch(70.6% 0.055 237.4)
-
Step 500
500
#5F90AF
oklch(63.1% 0.071 237.2)
-
Step 600
600
#447A9B
oklch(55.6% 0.077 237.2)
-
Step 700
700 (this color)
#3B6C8A
oklch(51% 0.071 237.3)
-
Step 800
800
#2D546C
oklch(42.8% 0.06 237.4)
-
Step 900
900
#294557
oklch(37.6% 0.046 237.9)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#3B6C8A 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) | #5E6B8B | 0.042 |
| Deuteranopia (no green cones) | #53638A | 0.036 |
| Tritanopia (no blue cones) | #007476 | 0.056 |
| Achromatopsia (no color) | #676767 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B6C8A
#3B6C8A
oklch(51% 0.071 237.3)
- #855B3C
#855B3C
oklch(50.9% 0.071 56.8)
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 #3B6C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.028
- Metallic Blue #4F738E ΔE 0.032
- Muted Blue #3B719F ΔE 0.034
- Sea Blue #047495 ΔE 0.034
- Ocean Blue #03719C ΔE 0.037
- Dull Blue #49759C ΔE 0.040
- Slate #516572 ΔE 0.042
- Peacock Blue #016795 ΔE 0.042
Use #3B6C8A 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.