#306C8E
Closest named color: Denim (#3B638C). oklch(50.7% 0.082 236.4), rgb(48, 108, 142).
Aa
White text reads best on this color (5.73:1).
About this color
#306C8E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.082 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.027 away. White text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #306C8E |
| RGB | rgb(48, 108, 142) |
| HSL | hsl(202, 49%, 37%) |
| OKLCH | oklch(50.7% 0.082 236.4) |
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 #306C8E | 5.73:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #306C8E | 3.66:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #306C8E text on white | 5.73:1 | AA | Lc 78.5 | Fine for body text |
| #306C8E text on black | 3.66:1 | AA large text | Lc -23.3 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#A9C5D7
oklch(80.8% 0.04 236.2)
-
Step 400
400
#7AA7C3
oklch(70.6% 0.063 236.2)
-
Step 500
500
#5691B4
oklch(63% 0.081 236.1)
-
Step 600
600
#397BA0
oklch(55.6% 0.088 236)
-
Step 700
700 (this color)
#306C8E
oklch(50.7% 0.082 236.4)
-
Step 800
800
#25546F
oklch(42.6% 0.068 236.6)
-
Step 900
900
#23465A
oklch(37.7% 0.053 235.6)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#306C8E 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) | #5C6B90 | 0.049 |
| Deuteranopia (no green cones) | #4F628D | 0.041 |
| Tritanopia (no blue cones) | #007577 | 0.057 |
| Achromatopsia (no color) | #666666 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306C8E
#306C8E
oklch(50.7% 0.082 236.4)
- #895834
#895834
oklch(50.7% 0.082 55.9)
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 #306C8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.027
- Sea Blue #047495 ΔE 0.027
- Ocean Blue #03719C ΔE 0.028
- Muted Blue #3B719F ΔE 0.031
- Peacock Blue #016795 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.040
- Dull Blue #49759C ΔE 0.043
- Ocean #017B92 ΔE 0.045
Use #306C8E 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.