#306EAD
Closest named color: French Blue (#436BAD). oklch(52.9% 0.118 251.4), rgb(48, 110, 173).
Aa
White text reads best on this color (5.30:1).
About this color
#306EAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.118 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.018 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #306EAD |
| RGB | rgb(48, 110, 173) |
| HSL | hsl(210, 57%, 43%) |
| OKLCH | oklch(52.9% 0.118 251.4) |
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 #306EAD | 5.30:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #306EAD | 3.95:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #306EAD text on white | 5.30:1 | AA | Lc 76.1 | Fine for body text |
| #306EAD text on black | 3.95:1 | AA large text | Lc -25.7 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C4E3
oklch(81% 0.053 251.1)
-
Step 400
400
#79A4D4
oklch(70.6% 0.085 251.8)
-
Step 500
500
#558DC9
oklch(63.1% 0.109 251.4)
-
Step 600
600 (this color)
#306EAD
oklch(52.9% 0.118 251.4)
-
Step 700
700
#2A639D
oklch(49.1% 0.111 251.4)
-
Step 800
800
#24517F
oklch(42.7% 0.091 251.2)
-
Step 900
900
#234366
oklch(37.6% 0.071 252.1)
-
Step 950
950
#15283C
oklch(27.1% 0.045 250.9)
#306EAD 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) | #5172B0 | 0.036 |
| Deuteranopia (no green cones) | #3F66AC | 0.024 |
| Tritanopia (no blue cones) | #007D85 | 0.090 |
| Achromatopsia (no color) | #6B6B6B | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306EAD
#306EAD
oklch(52.9% 0.118 251.4)
- #945E00
#945E00
oklch(52.9% 0.114 70.8)
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 #306EAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.018
- Mid Blue #276AB3 ΔE 0.018
- Flat Blue #3C73A8 ΔE 0.022
- Muted Blue #3B719F ΔE 0.027
- Nice Blue #107AB0 ΔE 0.034
- Ocean Blue #03719C ΔE 0.037
- Windows Blue #3778BF ΔE 0.038
- Dull Blue #49759C ΔE 0.045
Use #306EAD 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.