#306E8E
Closest named color: Sea Blue (#047495). oklch(51.2% 0.081 234), rgb(48, 110, 142).
Aa
White text reads best on this color (5.60:1).
About this color
#306E8E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.081 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.023 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #306E8E |
| RGB | rgb(48, 110, 142) |
| HSL | hsl(200, 49%, 37%) |
| OKLCH | oklch(51.2% 0.081 234) |
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 #306E8E | 5.60:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #306E8E | 3.74:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #306E8E text on white | 5.60:1 | AA | Lc 77.8 | Fine for body text |
| #306E8E text on black | 3.74:1 | AA large text | Lc -24.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#A9C5D6
oklch(80.8% 0.039 234.6)
-
Step 400
400
#7AA8C2
oklch(70.8% 0.062 233.6)
-
Step 500
500
#5592B3
oklch(63.2% 0.081 233.7)
-
Step 600
600
#387B9F
oklch(55.5% 0.088 234.9)
-
Step 700
700 (this color)
#306E8E
oklch(51.2% 0.081 234)
-
Step 800
800
#24556E
oklch(42.7% 0.067 233.6)
-
Step 900
900
#234659
oklch(37.7% 0.052 234.2)
-
Step 950
950
#152934
oklch(26.9% 0.033 233.9)
#306E8E 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) | #5F6D90 | 0.052 |
| Deuteranopia (no green cones) | #52638E | 0.045 |
| Tritanopia (no blue cones) | #007679 | 0.053 |
| Achromatopsia (no color) | #686868 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306E8E
#306E8E
oklch(51.2% 0.081 234)
- #8B5938
#8B5938
oklch(51.2% 0.081 53.4)
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 #306E8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.023
- Ocean Blue #03719C ΔE 0.027
- Muted Blue #3B719F ΔE 0.030
- Denim #3B638C ΔE 0.033
- Peacock Blue #016795 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.036
- Dull Blue #49759C ΔE 0.039
- Ocean #017B92 ΔE 0.040
Use #306E8E 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.